Paccar

PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions

Reason:
Engine Torque Limit Feature – Special Instructions

Effect:
None on performance

Circuit Description:
This is an information only fault that will only become active if the engine has been operated above a calibrated torque threshold.

Component Location:
The ECM mounting location varies, depending on the engine model, and may be mounted either on or off the engine.

Conditions for Running the Diagnostics:
This diagnostic runs continuously when the engine is running.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine was being operated above the maximum torque threshold.

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:
The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.

Shop Talk:
This fault will go inactive once the engine is operated below the maximum torque threshold in the calibration.

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

PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2976 PID: SPN:3361 FMI:2 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Temperature – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:2973 PID:102 SPN:102 FMI:2 Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:297 PID:297 SPN:1388 FMI:3 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2964 PID:105 SPN:105 FMI:0 Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:2964 PID:105 SPN:105 FMI:15 Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Aftertreatment Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the aftertreatment diesel particulate filter outlet pressure sensor circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the aftertreatment diesel particulate filter outlet pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The aftertreatment diesel particulate filter outlet pressure sensor provides a signal to the ECM on the aftertreatment diesel particulate filter outlet pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the outlet of the aftertreatment diesel particulate filter.

Component Location:
The aftertreatment diesel particulate filter differential pressure sensor is mounted on the diesel particulate filter. It is a combination sensor that detects both diesel particulate filter differential pressure and outlet pressure. Refer to the original equipment manufacturer (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 the aftertreatment diesel particulate filter outlet pressure signal voltage was out range high.

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) Diesel exhaust fluid injection into the aftertreatment system is disabled.
3) 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, 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:
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) Open return circuit in the harness, connectors, or sensor
2) Signal circuit shorted to sensor supply or battery voltage

PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions
PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2976 PID: SPN:3361 FMI:2 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Temperature – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:2973 PID:102 SPN:102 FMI:2 Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:297 PID:297 SPN:1388 FMI:3 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2964 PID:105 SPN:105 FMI:0 Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Aftertreatment Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the aftertreatment diesel particulate filter outlet pressure sensor circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the aftertreatment diesel particulate filter outlet pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The aftertreatment diesel particulate filter outlet pressure sensor provides a signal to the ECM on the aftertreatment diesel particulate filter outlet pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the outlet of the aftertreatment diesel particulate filter.

Component Location:
The aftertreatment diesel particulate filter differential pressure sensor is mounted on the diesel particulate filter. It is a combination sensor that detects both diesel particulate filter differential pressure and outlet pressure. Refer to the original equipment manufacturer (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 the aftertreatment diesel particulate filter outlet pressure signal voltage was out of range low.

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) Diesel exhaust fluid injection into the aftertreatment system is disabled.
3) 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, 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:
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

Possible Causes:
1) Signal circuit open or shorted to ground in the engine harness or sensor
2) Supply line open or shorted to ground

PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions
PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2976 PID: SPN:3361 FMI:2 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Temperature – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:2973 PID:102 SPN:102 FMI:2 Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:297 PID:297 SPN:1388 FMI:3 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Above Normal or Shorted to High Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect

Reason:
Aftertreatment Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent or Incorrect. The aftertreatment diesel particulate filter outlet pressure sensor is reading an erratic value at initial key ON or during engine operation.

Effect:
Possible reduced engine performance.

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the aftertreatment diesel particulate filter outlet pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The aftertreatment diesel particulate filter outlet pressure sensor provides a signal to the ECM on the aftertreatment diesel particulate filter outlet pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the outlet of the aftertreatment diesel particulate filter.

Component Location:
The aftertreatment diesel particulate filter differential pressure sensor is mounted on the diesel particulate filter. It is a combination sensor that detects both diesel particulate filter differential pressure and outlet pressure. Refer to the original equipment manufacturer (OEM) service manual.

Conditions for Running the Diagnostics:
This diagnostic consists of two parts:
1) One part runs when the keyswitch is initially turned ON before the engine is started
2) The second part runs continuously while the engine is running

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the aftertreatment diesel particulate filter outlet pressure was greater than 1.5 kpa [0.22 psi] or less than -1.5 kpa [0.22 psi] at initial key ON, or was not changing with engine conditions.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the amber CHECK ENGINE lamp and/or Malfunction Indicator Lamp (MIL) after the diagnostic fails on two consecutive trips.
2) Diesel exhaust fluid injection into the aftertreatment system is disabled.
3) 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, 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:
Note: It is possible to set this fault in a shop environment by performing a key cycle with the tailpipe connected to an exhaust ventilation system.

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

Possible Causes:
1) Stuck in-range aftertreatment diesel particulate filter outlet pressure sensor reading
2) High resistance in the aftertreatment diesel particulate filter outlet pressure sensor signal or return wires
3) Higher than expected diesel particulate filter outlet pressure
4) Excessive diesel exhaust fluid (DEF) deposits in the aftertreatment decomposition tube
5) Plugged aftertreatment outlet pressure sensor ports could cause this fault code if pressure is held in the port after the engine is turned OFF.

PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions
PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2976 PID: SPN:3361 FMI:2 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Temperature – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:2973 PID:102 SPN:102 FMI:2 Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the EGR orifice pressure sensor.

Effect:
Possible reduced engine performance

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the EGR orifice pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The EGR orifice pressure sensor provides a signal to the ECM on the EGR orifice pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the EGR orifice pressure sensor.

Component Location:
The EGR orifice pressure sensor is mounted on the EGR mass measurement assembly near the EGR differential pressure sensor.

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 EGR orifice pressure sensor signal voltage was greater than 4.75-volts for 5 seconds.

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) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
3) 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, 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:
N/A

Possible Causes:
1) Open return circuit in the harness, connectors, or sensor
2) Signal circuit shorted to sensor supply or battery voltage

PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions
PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2976 PID: SPN:3361 FMI:2 Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Temperature – Data Erratic, Intermittent, or Incorrect

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3137 PID: SPN:5019 FMI:4 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the EGR orifice pressure sensor.

Effect:
Possible reduced engine performance.

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the EGR orifice pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The EGR orifice pressure sensor provides a signal to the ECM on the EGR orifice pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the EGR orifice pressure sensor.

Component Location:
The EGR orifice pressure sensor is mounted on the EGR mass measurement assembly near the EGR differential pressure sensor.

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 EGR orifice pressure sensor signal voltage was less than 0.25 volts for 5 seconds.

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) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
3) 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, 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:
N/A

Possible Causes:
1) Signal circuit open or shorted to ground in the engine harness or sensor
2) Supply line open or shorted to ground

PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions
PACCAR PX-9 CM2350 (2013-17) Fault Code:298 PID:443 SPN:1388 FMI:4 Auxiliary Pressure Sensor Input 2 Circuit – Voltage Below Normal or Shorted to Low Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3138 PID: SPN:5019 FMI:2 Engine Exhaust Gas Recirculation Outlet Pressure – Data Erratic, Intermittent, or Incorrect

Reason:
Engine Exhaust Gas Recirculation Outlet Pressure – Data Erratic, Intermittent or Incorrect. The EGR orifice pressure sensor is reading an erratic value at initial key ON or while the engine is running.

Effect:
Possible reduced engine performance

Circuit Description:
The engine control module (ECM) provides a 5 volt supply to the EGR orifice pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The EGR orifice pressure sensor provides a signal to the ECM on the EGR orifice pressure sensor signal circuit. This sensor signal voltage changes based on the pressure at the EGR orifice pressure sensor.

Component Location:
The EGR orifice pressure sensor is mounted on the EGR mass measurement assembly near the EGR differential pressure sensor.

Conditions for Running the Diagnostics:
This is a two part diagnostic.
1) One part runs immediately after the keyswitch is turned OFF, and the engine coolant temperature is above 70°C or 158°F.
2) The second part runs continuously while the engine is running

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the EGR orifice pressure sensor was not changing with engine conditions or was incorrect at key OFF.

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) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
3) 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, start the engine and let it idle for 5 minutes. After 5 minutes, shut OFF the engine, perform a key cycle, and leave the key in the ON position 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:
N/A

Possible Causes:
1) A damaged EGR orifice pressure sensor
2) High resistance in the wiring harness on the signal or return wire
3) Plugged or restricted EGR differential pressure sensor flow ports

PACCAR PX-9 CM2350 (2013-17) Fault Code:3137 PID: SPN:5019 FMI:4 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2998 PID: SPN:1632 FMI:14 Engine Torque Limit Feature – Special Instructions

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3139 PID: SPN:3667 FMI:3 Engine Air Shutoff Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Engine Air Shutoff Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the air shutoff circuit.

Effect:
The engine air shutoff valve will be disabled.

Circuit Description:
The air shutoff valve is an optional component used to shutdown the engine in the event of an engine overspeed condition. It can be closed via a manual shutdown switch or via an ECM command.

Component Location:
The engine air shutoff valve location can vary depending on the 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 the engine air shutoff driver was shorted to voltage.

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:
N/A

Possible Causes:
1) Open engine air shutoff circuit
2) Short circuit to voltage in the engine air shutoff circuit
3) Malfunctioning ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:3138 PID: SPN:5019 FMI:2 Engine Exhaust Gas Recirculation Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3137 PID: SPN:5019 FMI:4 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3133 PID: SPN:3610 FMI:3 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3141 PID: SPN:3667 FMI:4 Engine Air Shutoff Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Engine Air Shutoff Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine air shutoff circuit.

Effect:
The engine air shutoff valve will be disabled.

Circuit Description:
The air shutoff valve is an optional component used to shutdown the engine in the event of an engine overspeed condition. It can be closed via a manual shutdown switch or via an ECM command.

Component Location:
The engine air shutoff valve location can vary depending on the 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 the engine air shut off driver was shorted to ground.

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:
N/A

Possible Causes:
1) Short circuit to ground in the engine air shutoff circuit
2) Malfunctioning ECM

PACCAR PX-9 CM2350 (2013-17) Fault Code:3139 PID: SPN:3667 FMI:3 Engine Air Shutoff Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3138 PID: SPN:5019 FMI:2 Engine Exhaust Gas Recirculation Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3137 PID: SPN:5019 FMI:4 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3134 PID: SPN:3610 FMI:4 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:3142 PID: SPN:4360 FMI:3 Aftertreatment 1 SCR Intake Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Aftertreatment SCR Intake Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the SCR intake temperature sensor circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The aftertreatment SCR (selective catalytic reduction) temperature sensor module is a smart device that communicates with the engine control module via the J1939 data link. The aftertreatment SCR temperature sensor module performs its own internal diagnostics and reports malfunctions back to the engine control module using the J1939 data link. The aftertreatment SCR temperature sensor module is used to measure the aftertreatment SCR intake temperature and aftertreatment SCR outlet temperature. The temperature probes are permanently attached to the aftertreatment SCR temperature sensor module and can not be replaced individually.

Component Location:
The SCR intake temperature sensor is located in the aftertreatment system. It is located between the diesel particulate filter and the SCR catalyst in the exhaust system.

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 SCR intake temperature sensor signal voltage was greater than 4.4-VDC for more than 2 seconds.

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) Diesel exhaust fluid injection into the aftertreatment system is disabled.
3) 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, start the engine and let it idle for 1 minute.
2) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
3) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.

Shop Talk:
The SCR intake temperature sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active.

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

PACCAR PX-9 CM2350 (2013-17) Fault Code:3141 PID: SPN:3667 FMI:4 Engine Air Shutoff Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3139 PID: SPN:3667 FMI:3 Engine Air Shutoff Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3138 PID: SPN:5019 FMI:2 Engine Exhaust Gas Recirculation Outlet Pressure – Data Erratic, Intermittent, or Incorrect
PACCAR PX-9 CM2350 (2013-17) Fault Code:3137 PID: SPN:5019 FMI:4 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3136 PID: SPN:5019 FMI:3 Engine Exhaust Gas Recirculation Outlet Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:3135 PID: SPN:3610 FMI:2 Aftertreatment 1 Diesel Particulate Filter Outlet Pressure – Data Erratic, Intermittent, or Incorrect

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