Paccar

Reason:
Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. EGR temperature has exceeded the engine protection limit

Effect:
Possible reduced engine performance.

Circuit Description:
The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature.

The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.

Component Location:
The EGR temperature sensor is located on the EGR connection tube between the EGR cooler and the air intake connection.

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 temperature was greater than 210°C [410°F] for more than 5 seconds.

Action Taken When the Fault Code is Active:
1) The ECM logs the fault code immediately when the diagnostic runs and fails.
2) Engine torque will be reduced.

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 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: This fault code will most likely not be active with no load in the shop. The engine must be loaded to trigger this fault code.

Possible Causes:
1) Plugged or restricted EGR differential pressure sensor ports
2) Damaged EGR differential pressure tubes
3) A malfunctioning EGR valve
4) A low reading from the EGR differential pressure sensor
5) A low reading for the EGR valve position sensor
6) High exhaust temperatures
7) Low coolant level
8) High coolant temperature
9) An incorrect coolant/water mixture
10) A stuck closed variable geometry turbocharger
11) A fouled EGR cooler

Reason:
Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. EGR temperature has exceeded the engine protection limit

Effect:
Possible reduced engine performance.

Circuit Description:
The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature.

The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.

Component Location:
The EGR temperature sensor is located on the EGR connection tube between the EGR cooler and the air intake connection.

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 temperature was greater than 210°C [410°F] for more than 5 seconds.

Action Taken When the Fault Code is Active:
1) The ECM logs the fault code immediately when the diagnostic runs and fails.
2) Engine torque will be reduced.

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 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: This fault code will most likely not be active with no load in the shop. The engine must be loaded to trigger this fault code.

Possible Causes:
1) Plugged or restricted EGR differential pressure sensor ports
2) Damaged EGR differential pressure tubes
3) A malfunctioning EGR valve
4) A low reading from the EGR differential pressure sensor
5) A low reading for the EGR valve position sensor
6) High exhaust temperatures
7) Low coolant level
8) High coolant temperature
9) An incorrect coolant/water mixture
10) A stuck closed variable geometry turbocharger
11) A fouled EGR cooler

Reason:
Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level. EGR temperature has exceeded the engine protection limit.

Effect:
Possible reduced engine performance.

Circuit Description:
The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.

Component Location:
The EGR temperature sensor is located on the EGR connection tube between the EGR cooler and the air intake connection.

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 temperature was greater than 250°C [482°F] for more than 5 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) 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) 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: This fault code will most likely not be active with no load in the shop. The engine must be loaded to trigger this fault code

Possible Causes:
1) A fouled EGR cooler
2) Plugged or restricted EGR differential pressure sensor ports
3) A damaged EGR valve
4) A low reading from the EGR differential pressure sensor
5) A low reading for the EGR valve position sensor
6) High exhaust temperatures
7) Low coolant level
8) High coolant temperature
9) An incorrect coolant/water mixture
10) A stuck closed variable geometry turbocharger

Reason:
Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level. EGR temperature has exceeded the engine protection limit.

Effect:
Possible reduced engine performance.

Circuit Description:
The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used by the ECM for the engine protection system and engine emissions control.

Component Location:
The EGR temperature sensor is located on the EGR connection tube between the EGR cooler and the air intake connection.

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 temperature was greater than 250°C [482°F] for more than 5 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) 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) 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: This fault code will most likely not be active with no load in the shop. The engine must be loaded to trigger this fault code

Possible Causes:
1) A fouled EGR cooler
2) Plugged or restricted EGR differential pressure sensor ports
3) A damaged EGR valve
4) A low reading from the EGR differential pressure sensor
5) A low reading for the EGR valve position sensor
6) High exhaust temperatures
7) Low coolant level
8) High coolant temperature
9) An incorrect coolant/water mixture
10) A stuck closed variable geometry turbocharger

Reason:
Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature is above engine protection warning 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 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 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 intake manifold temperature was greater than 120°C [248°F].

Action Taken When the Fault Code is Active:
1) The ECM logs the fault code immediately when the diagnostic runs and fails.
2) The torque output of the engine will be reduced.

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 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 intake manifold 1 temperature sensor measures the temperature of the charge-air as it passes through the intake manifold.

Possible Causes:
1) Plugged charge-air cooler fins
2) Restricted airflow through the charge-air cooler
3) An undersized charge-air cooler
4) High turbocharger compressor outlet temperature

Reason:
Intake Manifold 1 Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature is above engine protection warning 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 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 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 intake manifold temperature was greater than 120°C [248°F].

Action Taken When the Fault Code is Active:
1) The ECM logs the fault code immediately when the diagnostic runs and fails.
2) The torque output of the engine will be reduced.

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 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 intake manifold 1 temperature sensor measures the temperature of the charge-air as it passes through the intake manifold.

Possible Causes:
1) Plugged charge-air cooler fins
2) Restricted airflow through the charge-air cooler
3) An undersized charge-air cooler
4) High turbocharger compressor outlet temperature

Reason:
Auxiliary Pressure Sensor Input 2 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the OEM pressure circuit.

Effect:
None on performance

Circuit Description:
The original equipment manufacturer (OEM) has the option of wiring a pressure or temperature sensor input to the Cummins® engine control module (ECM). A specific calibration is then created to recognize this pressure or temperature sensor input. This fault code is activated when the pressure or temperature input from the OEM sensor exceeds the engine protection limit defined by the OEM. Depending on OEM requirements, an Engine Protection derate can be associated with this fault code.

Component Location:
The OEM pressure sensor input and location will vary. Refer to the OEM service manual for sensor 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 OEM pressure signal circuit was out of range high.

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 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.
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 return circuit in the harness, connectors, or sensor.
2) Signal circuit shorted to sensor supply or battery voltage

Reason:
Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect. The intake manifold pressure reading is erratic or not rational.

Effect:
Possible reduced engine performance.

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

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

Conditions for Running the Diagnostics:
This diagnostic consists of two parts:
One part runs immediately after the keyswitch is turned OFF, and the engine coolant temperature is above 70°C or 158°F. The second part occurs when the engine is operating.

Conditions for Setting the Fault Codes:
The Engine Control Module (ECM) detected the intake manifold pressure sensor was reading higher or lower than expected at keyoff or during normal engine operation.

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 of the intake manifold pressure reading is used.
3) Diesel exhaust fluid injection into the aftertreatment system is disabled.
4) Active and stationary regeneration of the diesel particulate filter will be disabled.
5) Exhaust Gas Recirculation (EGR) valve operation will be disabled.
6) 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, first ensure the engine coolant temperature is above 70°C or 158° F. Operate the engine if necessary.
2) Cycle the keyswitch to the ON position for 30 seconds, then cycle the keyswitch to the OFF position for 30 seconds. Start the engine and let it idle for 1 minute.
3) The fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
4) The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
5) 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.
6) 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:
Possible Causes:
1) A damaged turbocharger speed sensor
2) A damaged barometric pressure sensor
3) Leaks in the air intake system between the turbocharger and intake manifold
4) Restriction in the charge-air cooler
5) A damaged intake manifold pressure sensor
6) A damaged turbocharger compressor intake temperature sensor