Paccar

PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level

Reason:
Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level. The intake manifold temperature is below a critical threshold

Effect:
None on performance.

Circuit Description:
The Engine Control Module (ECM) provides 5 volts to the intake manifold temperature signal circuit, and monitors the change in voltage caused by changes in the resistance of the sensor to determine the intake manifold temperature. When the intake air is cold, the sensor (or thermistor) resistance is high. The ECM signal voltage only pulls down a small amount through the sensor to a ground. Therefore, the ECM senses a high signal voltage or low temperature. When the intake air is warm, the sensor resistance is low. The signal voltage pulls down a large amount. Therefore, the ECM senses a low signal voltage, or a high temperature.

Component Location:
The intake manifold 1 pressure/temperature sensor is located in the air intake horn.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the engine is operating at idle.

Conditions for Setting the Fault Codes:
The intake manifold temperature was less than 20°C [68°F] while the engine was idleing for an extended period of time.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
The EGR valve was closed because the engine was idling with cold intake manifold temperatures for an extended period of time.

Possible Causes:
1) Inactive fault codes
2) Faulty ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:338 PID:SID 87 SPN:1267 FMI:3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:11 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:31 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3375 PID:SID 115 SPN:5397 FMI:31 Aftertreatment Diesel Particulate Filter Regeneration Too Frequent – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3375 PID:SID 115 SPN:5397 FMI:11 Aftertreatment Diesel Particulate Filter Regeneration Too Frequent – Condition Exists

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PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal, or Shorted to Low Source. Low voltage detected at the idle shutdown vehicle accessory or ignition bus relay circuit when commanded ON.

Effect:
Vehicle accessories or ignition bus loads controlled by the idle shutdown relay will not power up.

Circuit Description:
The Engine Control Module (ECM) Idle Shutdown feature has an optional parameter for a shutdown accessory relay. When this parameter is set to “Installed”, the ECM sends a signal to energize the relay and turn off vehicle accessories during idle shutdown events. The idle shutdown relay return circuit varies by Original Equipment Manufacturer (OEM). The return circuit can be returned to the ECM through the ECM Return (General) or connected directly to ground. Refer to the OEM service manual to determine grounding configuration.

Component Location:
The idle shutdown relay location varies by OEM. Refer to the OEM service manual to determine the location.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the idle shutdown relay pulse width modulated (PWM) signal was NOT at system voltage when the pulse width modulated (PWM) signal was commanded ON.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the amber CHECK ENGINE lamp immediately when the diagnostic runs and fails.
2) The accessories controlled by the idle shutdown relay will be disabled.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
The ECM monitors the voltage level on this circuit. This fault code is logged if it detects a low voltage when the relay signal is commanded on. This fault code can be caused by a short circuit to ground in the idle shutdown relay, OEM harness, or connectors. Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

Possible Causes:
1) Inactive fault codes
2) Faulty idle shutdown relay and circuit
3) Open circuit

PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:338 PID:SID 87 SPN:1267 FMI:3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:11 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:31 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3375 PID:SID 115 SPN:5397 FMI:31 Aftertreatment Diesel Particulate Filter Regeneration Too Frequent – Condition Exists

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error

Reason:
Transmission Output Shaft Speed – Received Network Data In Error. The J1939 multiplexing controller has indicated a malfunction of the transmission output shaft speed sensor.

Effect:
None on performance.

Circuit Description:
Normally, switches, accelerators, and other components are connected to the engine control module (ECM) directly through individual wires. Multiplexing allows those same components to be hard wired to an original equipment manufacturer (OEM) vehicle electronic control unit (VECU) or transmission electronic control unit (ECU) in the cab. Then component values and states from components such as sensors, accelerators, and switches can be transmitted from the OEM VECU to the Cummins® ECM over the SAE J1939 data link.

Messages sent from OEM VECUs or transmission ECUs are received by the Cummins® ECM and used for controlling the engine. The Cummins® ECM and OEM VECU(s) must be configured properly, so that proper operation of the multiplexed components will occur.

Component Location:
The SAE J1939 data link wiring and the SAE J1939 devices vary by OEM options.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

Conditions for Setting the Fault Codes:
The OEM VECU determined there was a malfunction of the transmission output shaft speed sensor.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
The J1939 multiplexing controller has indicated a malfunction of the transmission output shaft speed sensor.

Possible Causes:
1) Inactive fault codes
2) Faulty OEM vehicle electronic control unit
3) Faulty ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:338 PID:SID 87 SPN:1267 FMI:3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:11 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:31 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error

Reason:
Transmission Output Shaft Speed – Received Network Data In Error. The J1939 multiplexing controller has indicated a malfunction of the transmission output shaft speed sensor.

Effect:
None on performance.

Circuit Description:
Normally, switches, accelerators, and other components are connected to the engine control module (ECM) directly through individual wires. Multiplexing allows those same components to be hard wired to an original equipment manufacturer (OEM) vehicle electronic control unit (VECU) or transmission electronic control unit (ECU) in the cab. Then component values and states from components such as sensors, accelerators, and switches can be transmitted from the OEM VECU to the Cummins® ECM over the SAE J1939 data link.

Messages sent from OEM VECUs or transmission ECUs are received by the Cummins® ECM and used for controlling the engine. The Cummins® ECM and OEM VECU(s) must be configured properly, so that proper operation of the multiplexed components will occur.

Component Location:
The SAE J1939 data link wiring and the SAE J1939 devices vary by OEM options.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

Conditions for Setting the Fault Codes:
The OEM VECU determined there was a malfunction of the transmission output shaft speed sensor.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
The J1939 multiplexing controller has indicated a malfunction of the transmission output shaft speed sensor.

Possible Causes:
1) Inactive fault codes
2) Faulty OEM vehicle electronic control unit
3) Faulty ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:338 PID:SID 87 SPN:1267 FMI:3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3376 PID: SPN:5319 FMI:11 Aftertreatment Diesel Particulate Filter Incomplete Regeneration – Condition Exists

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the diesel exhaust fluid line heater 3 circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The aftertreatment diesel exhaust fluid line heaters are used to defrost and/or prevent freezing of the diesel exhaust fluid lines.

Component Location:
The aftertreatment diesel exhaust fluid line heater 3 is located on the suction line between the diesel exhaust fluid tank and diesel exhaust fluid dosing unit.

Conditions for Running the Diagnostics:
This diagnostic runs when the keyswitch is in the ON position and line heating is commanded OFF.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the line heater voltage was above a calibratible value and the line heater current was above a calibratible value.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
2) The line heater will be disabled.
3) Diesel exhaust fluid injection into the aftertreatment system is disabled.
4) Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, and then use INSITE™ electronic service tool to perform the Diesel Exhaust Fluid Doser System Heater Test found under ECM Diagnostic Tests.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.

Possible Causes:
1) Malfunctioning line heater
2) Malfunctioning aftertreatment diesel exhaust fluid contoller.
3) A short circuit to battery in the OEM harness

PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:338 PID:SID 87 SPN:1267 FMI:3 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Above Normal or Shorted to High Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3423 PID: SPN:4344 FMI:4 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage below normal, or shorted to low source. Low signal voltage detected at the diesel exhaust fluid line heater 3 circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The aftertreatment diesel exhaust fluid line heaters are used to defrost and/or prevent freezing of the diesel exhaust fluid lines.

Component Location:
The aftertreatment diesel exhaust fluid line heater 3 is located on the suction line between the diesel exhaust fluid tank and diesel exhaust fluid dosing unit.

Conditions for Running the Diagnostics:
This diagnostic runs when the keyswitch is in the ON position and line heating is commanded ON.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the line heater voltage was below a calibratible value and the line heater current was below a calibratable valure.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.
2) The line heater will be disabled.
3) Diesel exhaust fluid injection into the aftertreatment system is disabled.
4) Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, and then use INSITE™ electronic service tool to perform the Diesel Exhaust Fluid Doser System Heater Test found under ECM Diagnostic Tests.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
N/A

Possible Causes:
1) A malfunctioning line heater
2) A short circuit to ground in the OEM harness

PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:1 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3425 PID:SID 254 SPN:4344 FMI:5 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit

Reason:
Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit. Open circuit detected in the diesel exhaust fluid line heater 3.

Effect:
Possible reduced engine performance.

Circuit Description:
The aftertreatment diesel exhaust fluid line heaters are used to defrost and/or prevent freezing of the diesel exhaust fluid lines.

Component Location:
The aftertreatment diesel exhaust fluid line heater 3 is located on the suction line between the diesel exhaust fluid tank and diesel exhaust fluid dosing unit.

Conditions for Running the Diagnostics:
This diagnostic runs when the keyswitch is in the ON position and line heating is commanded ON.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected an open in the line heater circuit.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator
2) Lamp (MIL) immediately when the diagnostic runs and fails.
3) Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.
4) Engine torque will be severely reduced.
5) Vehicle speed will be limited to 8 km [5 mi] per hour after extended engine operation with the fault code active.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, and then use INSITE™ electronic service tool to perform the Diesel Exhaust Fluid Doser System Heater Test found under ECM Diagnostic Tests.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.

Possible Causes:
1) Malfunctioning line heater relay
2) Malfunctioning line heater

PACCAR PX-9 CM2350 (2013-17) Fault Code:3423 PID: SPN:4344 FMI:4 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3385 PID:105 SPN:105 FMI:18 Intake Manifold 1 Temperature – Data Valid But Below Normal Operational Range – Moderately Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:343 PID:SID 254 SPN:SID 254 FMI:12 Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component

Reason:
Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component. ECM power supply errors have been detected.

Effect:
Possible reduced engine performance.

Circuit Description:
The engine control module (ECM) receives constant voltage from the batteries through the unswitched battery wires that are connected directly to the positive (+) battery post. The ECM receives switched battery input through the vehicle keyswitch wire when the vehicle keyswitch is turned ON.

Component Location:
The ECM is connected to the battery by the OEM harness. This direct link provides a constant power supply for the ECM. The location of the battery will vary with the original equipment manufacturer (OEM). Refer to the OEM service manual.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected a read or write error internal to the ECM.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
5) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.

Shop Talk:
Make sure the ECM unswitched battery supply is coming directly from the battery and not the starter. If unswitched power is coming from the starter, it is possible for the battery voltage to drop low enough during cranking to set this fault active. This fault can also be caused by resistance in the ECM battery supply (+) or ( ) circuits. Resistance in these circuits can cause the voltage level at the ECM input to drop low enough to set Fault Code 343 active.

Possible Causes:
1) Faulty batteries
2) Faulty power connector
3) Damaged harness
4) Damaged ECM connector pins
5) Open circuit in the battery power circuit
6) Incorrectly installed OEM fuse
7) Blown OEM fuse
8) Faulty ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:3425 PID:SID 254 SPN:4344 FMI:5 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit
PACCAR PX-9 CM2350 (2013-17) Fault Code:3423 PID: SPN:4344 FMI:4 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:339 PID:SID 87 SPN:1267 FMI:4 Idle Shutdown Vehicle Accessories Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3488 PID: SPN:563 FMI:9 Anti-Lock Braking (ABS) Controller – Abnormal Update Rate

Reason:
Anti-Lock Braking (ABS) Controller – Abnormal Update Rate. No communication or an invalid data transfer rate has been detected on the J1939 data link between the ECM and the anti-lock braking (ABS) controller.

Effect:
None on performance.

Circuit Description:
Normally, switches, accelerators, and other components are connected to the engine control module (ECM) directly through individual wires. Multiplexing allows those same components to be hard wired to an original equipment manufacturer (OEM) vehicle electronic control unit (VECU) or transmission electronic control unit (ECU) in the cab. Then component values and states from components such as sensors, accelerators, and switches can be transmitted from the OEM VECU to the Cummins® ECM over the SAE J1939 data link. Messages sent from OEM VECUs or transmission ECUs are received by the Cummins® ECM
and used for controlling the engine. The Cummins® ECM and OEM VECU(s) must be configured properly, so that proper operation of the multiplexed components will occur.

Component Location:
The SAE J1939 data link wiring and the SAE J1939 devices vary by OEM options.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) did not receive a message from a multiplexed device.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp and/or the Malfunction Indicator Lamp (MIL) immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp and/or MIL immediately after the diagnostic runs and passes.
4) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults.

Shop Talk:
When this fault code is active, some multiplexed devices can possibly not function as desired.

Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

For intermittent power supply and data link communication issues with aftertreatment components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing, or intermittent connections.

Possible Causes:
1) When the ECM is set up properly (components enabled and OEM VECU source addressed correctly) to receive information from an OEM VECU, but the OEM VECU is actually transmitting a message that says that component is not available for multiplexing. This can be caused when a multiplexed component is enabled in the Cummins® ECM, but the OEM VECU source address of the VECU transmitting the component message is incorrect in the Cummins® ECM, or the OEM VECU is not set up to transmit the multiplexed component message.
2) This fault can also be caused by a bad J1939 data link connection between the OEM VECU and Cummins® ECM, a bad connection between the component and the OEM VECU, a bad OEM VECU, or a bad Cummins® ECM. It may be necessary to contact the OEM for proper multiplexing configuration. It is possible to use INSITE™ electronic service tool to monitor multiplexed components.

PACCAR PX-9 CM2350 (2013-17) Fault Code:343 PID:SID 254 SPN:SID 254 FMI:12 Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component
PACCAR PX-9 CM2350 (2013-17) Fault Code:3425 PID:SID 254 SPN:4344 FMI:5 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit
PACCAR PX-9 CM2350 (2013-17) Fault Code:3423 PID: SPN:4344 FMI:4 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:2 Transmission Output Shaft Speed – Received Network Data in Error
PACCAR PX-9 CM2350 (2013-17) Fault Code:3418 PID: SPN:191 FMI:19 Transmission Output Shaft Speed – Received Network Data in Error

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PACCAR PX-9 CM2350 (2013-17) Fault Code:349 PID:191 SPN:191 FMI:0 Transmission Output Shaft Speed – Data Valid But Above Normal Operating Range – Moderately Severe Level

Reason:
Transmission Output Shaft Speed – Data Valid but Above Normal Operating Range – Moderately Severe Level. High auxillary speed signal frequency has been detected.

Effect:
Engine power derate.

Circuit Description:
The external speed command input circuit provides a means to govern the engine independent of engine speed. This circuit controls output shafts or other devices downstream of a torque converter.

Component Location:
The external speed command input circuit location varies with the original equipment manufacturer (OEM). Refer to the OEM service manual.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the keyswitch is in the ON position.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected auxillary speed sensor frequency above the OEM defined limit.

Action Taken When the Fault Code is Active:
The ECM illuminates the amber CHECK ENGINE lamp immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code:
1) To validate the repair, start the engine and let it idle for 1 minute.
2) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
3) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
4) The Reset All Faults command in INSITE™ electronic service tool can be used to clear active and inactive faults.

Shop Talk:
This fault code can only be caused by a high-frequency input into the external speed command input circuit.

Possible Causes:
1) Inaccurate external speed command input signal sending unit
2) Inactive fault codes

PACCAR PX-9 CM2350 (2013-17) Fault Code:349 PID:191 SPN:191 FMI:16 Transmission Output Shaft Speed – Data Valid But Above Normal Operating Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:3488 PID: SPN:563 FMI:9 Anti-Lock Braking (ABS) Controller – Abnormal Update Rate
PACCAR PX-9 CM2350 (2013-17) Fault Code:343 PID:SID 254 SPN:SID 254 FMI:12 Engine Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component
PACCAR PX-9 CM2350 (2013-17) Fault Code:3425 PID:SID 254 SPN:4344 FMI:5 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Current Below Normal or Open Circuit
PACCAR PX-9 CM2350 (2013-17) Fault Code:3423 PID: SPN:4344 FMI:4 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3422 PID: SPN:4344 FMI:3 Aftertreatment Diesel Exhaust Fluid Line Heater 3 Circuit – Voltage Above Normal or Shorted to High Source

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