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PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level

Reason:
Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level. The aftertreatment differential pressure has exceeded the maximum operating limits or the diesel particulate filter is plugged.

Effect:
Possible reduced engine performance

Circuit Description:
The engine aftertreatment system monitors the soot load in the aftertreatment diesel particulate filter. Under normal operating conditions, the aftertreatment diesel particulate filter is self-cleaning, where soot is converted to carbon dioxide, nitrogen, and water. Under light load operating conditions, it can be necessary to perform a stationary regeneration of the aftertreatment diesel particulate filter. The soot load in the aftertreatment diesel particulate filter is estimated, using the aftertreatment differential pressure sensor and the calculated soot output of the engine.

Component Location:
The aftertreatment diesel particulate filter is located in the exhaust system and is installed by the original equipment manufacturer (OEM). Refer to the OEM service manual.

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 diesel particulate filter is plugged or that the differential pressure across the diesel particulate filter was greater than the maximum limits.

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) Active and stationary regeneration of the diesel particulate filter will be 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, 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) The aftertreatment diesel particulate filter can be plugged with ash.
2) The engine has been operating in light load conditions that prevent exhaust gas temperatures from being high enough to actively regenerate the aftertreatment particulate trap.
3) An engine malfunction that is elevating the engine smoke output.

PACCAR PX-9 CM2350 (2013-17) Fault Code:1977 PID:SID 382 SPN:3556 FMI:5 Aftertreatment Doser Circuit – Current Below Normal or Open Circuit.
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID 27 SPN:641 FMI:0 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID27 SPN:641 FMI:15 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code1974 PID:101 SPN:101 FMI:15 Crankcase Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1974 PID:101 SPN:101 FMI:0 Crankcase Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level
Allison 1000 & 2000 Gen 5 Fault Code:P0122 Pedal Position Sensor Circuit – Low Voltage

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PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage or an open circuit detected at the engine oil temperature circuit.

Effect:
None on performance.

Circuit Description:
The engine oil temperature sensor is a variable resistor sensor and is used to measure the temperature of the engine oil in the oil rifle. The engine control module (ECM) supplies 5 volts to the engine oil temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the engine oil temperature. When the oil temperature 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 oil temperature is warm, the sensor resistance is low. The signal voltage pulls down a large amount. Therefore, the ECM senses a low signal voltage or high temperature. The engine oil temperature sensor is used to monitor the engine oil temperature. If the temperature exceeds a calibration limit, an engine protection fault code will be triggered.

Component Location:
The engine oil temperature sensor is located in the oil rifle.

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 oil temperature signal voltage was greater than 4.95 VDC for more than 10 second.

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) A default value for the engine oil temperature reading is used.

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 engine oil 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) Open return circuit in the harness, connectors, or sensor.
2) Open signal circuit or shorted to a voltage source.

PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1977 PID:SID 382 SPN:3556 FMI:5 Aftertreatment Doser Circuit – Current Below Normal or Open Circuit.
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID 27 SPN:641 FMI:0 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID27 SPN:641 FMI:15 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code1974 PID:101 SPN:101 FMI:15 Crankcase Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine oil temperature circuit.

Effect:
None on performance.

Circuit Description:
The engine oil temperature sensor is a variable resistor sensor and is used to measure the temperature of the engine oil in the oil rifle. The engine control module (ECM) supplies 5 volts to the engine oil temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the engine oil temperature. When the oil temperature 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 oil temperature is warm, the sensor resistance is low. The signal voltage pulls down a large amount. Therefore, the ECM senses a low signal voltage or high temperature. The engine oil temperature sensor is used to monitor the engine oil temperature. If the temperature exceeds a calibration limit, an engine protection fault code will be triggered.

Component Location:
The engine oil temperature sensor is located in the oil rifle.

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 oil temperature signal voltage was less than 0.1-VDC for more than 10 second.

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) A default value for the engine oil temperature reading is used.

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 shorted to ground in the engine harness
2) Signal shorted to return or ground in the sensor

PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1977 PID:SID 382 SPN:3556 FMI:5 Aftertreatment Doser Circuit – Current Below Normal or Open Circuit.
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID 27 SPN:641 FMI:0 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID27 SPN:641 FMI:15 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level

Reason:
Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level. Engine oil temperature signal indicates engine oil temperature above engine protection critical limit.

Effect:
Progressive power and/or speed derate increasing in severity from time of alert. If the Engine Protection Shutdown feature is enabled, the engine will shut down 30 seconds after the red STOP lamps starts flashing.

Circuit Description:
The engine oil temperature sensor is a variable resistor sensor and is used to measure the temperature of the engine oil in the oil rifle. The engine control module (ECM) supplies 5 volts to the engine oil temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the engine oil temperature. When the oil temperature 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 oil temperature is warm, the sensor resistance is low. The signal voltage pulls down a large amount. Therefore, the ECM senses a low signal voltage or high temperature. The engine oil temperature sensor is used to monitor the engine oil temperature. If the temperature exceeds a calibration limit, an engine protection fault code will be triggered.

Component Location:
The engine oil temperature sensor is located in the oil rifle.

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

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine oil temperature was greater than the maximum engine protection limit for 5 seconds.

Action Taken When the Fault Code is Active:
1) The ECM illuminates the red STOP ENGINE lamp immediately after the diagnostic runs and fails.
2) The torque output of the engine will be reduced.
3) Maximum engine operating speed will be decreased.
4) The engine will be shut down if the Engine Protection Shutdown feature is enabled.

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 red STOP 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:
This fault code indicates that the engine oil temperature has exceeded the maximum engine protection limit for oil temperature. Troubleshoot the cause of high engine oil temperature.

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

PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1977 PID:SID 382 SPN:3556 FMI:5 Aftertreatment Doser Circuit – Current Below Normal or Open Circuit.
PACCAR PX-9 CM2350 (2013-17) Fault Code:1976 PID:SID 27 SPN:641 FMI:0 VGT Actuator Driver Temperature – Data Valid But Above Normal Operating Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage or an open circuit detected at the engine brake solenoid number 1 signal circuit.

Effect:
Possible reduce engine braking performance.

Circuit Description:
The Engine Control Module (ECM) controls engine brakes on cylinders 1, 2, and 3 by sending a signal on the engine brake solenoid number 1 signal circuit. If an engine brake is installed, there will be a jumper harness from this connector to the engine brake pass-through connectors on the rocker lever housing.

Component Location:
The engine brake solenoids are located under the valve cover. The engine brake solenoids are controlled through the engine harness by the ECM.

Conditions for Running the Diagnostics:
This diagnostic runs when the keyswitch is in the ON position and when the pulse width modulated (PWM) device is getting energized or de-energized. In some cases, the diagnostics can also run at some fixed intervals.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine brake 1 pulse width modulated (PWM) signal was detected to be greater than 0 volts when the PWM signal was turned off by the ECM.

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 engine brake 1 circuit will be disabled.

Conditions for Clearing the Fault Code:
1) To validate the repair, drive the vehicle and operate the engine brakes. This will allow the diagnostic to run. If the fault code does not become active again, the repair has been validated.
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:
N/A

Possible Causes:
1) A short circuit to battery in the engine harness.
2) A malfunctioning engine brake solenoid

PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1977 PID:SID 382 SPN:3556 FMI:5 Aftertreatment Doser Circuit – Current Below Normal or Open Circuit.

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PACCAR PX-9 CM2350 (2013-17) Fault Code:2183 PID:SID 79 SPN:1072 FMI:4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 1 signal circuit.

Effect:
Possible reduce engine braking performance

Circuit Description:
The Engine Control Module (ECM) controls engine brakes on cylinders 1, 2, and 3 by sending a signal on the engine brake solenoid number 1 signal circuit. If an engine brake is installed, there will be a jumper harness from this connector to the engine brake pass-through connectors on the rocker lever housing.

Component Location:
The engine brake solenoids are located under the valve cover. The engine brake solenoids are controlled through the engine harness by the ECM.

Conditions for Running the Diagnostics:
This diagnostic runs when the keyswitch is in the ON position and when the pulse width modulated (PWM) device is getting energized or de-energized. In some cases, the diagnostics can also run at some fixed intervals.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the engine brake 1 pulse width modulated (PWM) signal was not detected to be system voltage when the PWM signal was turned 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 engine brake 1 circuit will be disabled.

Conditions for Clearing the Fault Code:
1) To validate the repair, drive the vehicle and operate the engine brakes. This will allow the diagnostic to run. If the fault code does not become active again, the repair has been validated.
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:
N/A

Possible Causes:
1) A short circuit to ground in the engine harness
2) A malfunctioning engine brake solenoid

PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:15 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:2185 PID:SID 232 SPN:3512 FMI:3 Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at 5 VDC sensor supply circuit to the accelerator pedal position sensor.

Effect:
Engine will only idle.

Circuit Description:
Sensor supply 4 of the engine control module (ECM) provides a 5 VDC supply to the accelerator pedal position sensor.

Component Location:
The accelerator pedal or lever position sensor is mounted to the accelerator pedal assembly. 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 sensor supply 4 signal voltage was out of range high.

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. The engine will only idle.

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:
This fault code can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than 5-VDC. Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.

Possible Causes:
1) Inactive fault codes
2) Faulty ECM
3) Short circuit
4) Faulty OEM harness

PACCAR PX-9 CM2350 (2013-17) Fault Code:2183 PID:SID 79 SPN:1072 FMI:4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:1981 PID: SPN:3936 FMI:0 Aftertreatment Diesel Particulate Filter System – Data Valid But Above Normal Operational Range – Least Severe Level

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PACCAR PX-9 CM2350 (2013-17) Fault Code:2186 PID:SID 232 SPN:3512 FMI:4 Sensor Supply 4 Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Sensor Supply 4 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the 5 VDC sensor supply circuit to the accelerator pedal position sensor.

Effect:
Engine will only idle.

Circuit Description:
Sensor supply 4 of the engine control module (ECM) provides a 5 VDC supply to the accelerator pedal position sensor.

Component Location:
The accelerator pedal or lever position sensor is mounted to the accelerator pedal assembly. 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 sensor supply 4 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) The engine will only idle.

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:
Low voltage on the 5 VDC supply wire can be caused by a short circuit to ground in the supply wire, a short circuit between the supply wire and return circuit, a malfunctioning accelerator, or a malfunctioning ECM power supply.

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

Possible Causes:
1) Inactive fault codes
2) Faulty circuit response
3)Faulty ECM
4) Faulty OEM harness

PACCAR PX-9 CM2350 (2013-17) Fault Code:2185 PID:SID 232 SPN:3512 FMI:3 Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2183 PID:SID 79 SPN:1072 FMI:4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:212 PID:175 SPN:175 FMI:3 Engine Oil Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:221 PID:108 SPN:108 FMI:3 Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source

Reason:
Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at barometric pressure circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The barometric pressure sensor responds to pressure changes in the atmospheric pressure. The pressure changes occur based on the elevation where the engine is presently operating. The barometric pressure sensor has a 5 volt supply circuit, a sensor signal voltage, and a return circuit.

Component Location:
The barometric pressure sensor is mounted on the main branch of the engine harness near the ECM.

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 barometric air pressure signal voltage was out of 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) A default value for the barometric pressure reading is used.
3) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
4) Diesel exhaust fluid injection into the aftertreatment system is disabled.
5) 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) 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.
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:
N/A

Possible Causes:
1) A short circuit to battery in the engine harness.
2) An open return circuit in the engine harness
3) A malfunctioning barometric air pressure sensor
4) A malfunctioning engine control module (ECM)

PACCAR PX-9 CM2350 (2013-17) Fault Code:2186 PID:SID 232 SPN:3512 FMI:4 Sensor Supply 4 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2185 PID:SID 232 SPN:3512 FMI:3 Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2183 PID:SID 79 SPN:1072 FMI:4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level
PACCAR PX-9 CM2350 (2013-17) Fault Code:213 PID:175 SPN:175 FMI:4 Engine Oil Temperature Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source

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PACCAR PX-9 CM2350 (2013-17) Fault Code:222 PID:108 SPN:108 FMI:4 Barometric Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source

Reason:
Barometric Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at barometric pressure circuit.

Effect:
Possible reduced engine performance.

Circuit Description:
The barometric pressure sensor responds to pressure changes in the atmospheric pressure. The pressure changes occur based on the elevation where the engine is presently operating. The barometric pressure sensor has a 5 volt supply circuit, a sensor signal voltage, and a return circuit.

Component Location:
The barometric pressure sensor is mounted on the main branch of the engine harness near the ECM.

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 barometric air 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) A default value for the barometric pressure reading is used.
3) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
4) Diesel exhaust fluid injection into the aftertreatment system is disabled.
5) 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) 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.
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:
N/A

Possible Causes:
1) A short circuit to ground in the engine harness
2) An open circuit in the engine harness
3) A malfunctioning barometric air pressure sensor
4) A malfunctioning engine control module (ECM)

PACCAR PX-9 CM2350 (2013-17) Fault Code:221 PID:108 SPN:108 FMI:3 Barometric Pressure Sensor Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2186 PID:SID 232 SPN:3512 FMI:4 Sensor Supply 4 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2185 PID:SID 232 SPN:3512 FMI:3 Sensor Supply 4 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2183 PID:SID 79 SPN:1072 FMI:4 Engine Brake Actuator Driver 1 Circuit – Voltage Below Normal or Shorted to Low Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:2182 PID:2182 SPN:1072 FMI:3 Engine Brake Actuator Driver 1 Circuit – Voltage Above Normal or Shorted to High Source
PACCAR PX-9 CM2350 (2013-17) Fault Code:214 PID:175 SPN:175 FMI:0 Engine Oil Temperature – Data Valid But Above Normal Operating Range – Most Severe Level

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