Paccar

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. The crankcase pressure sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness can cause multiple fault codes to be active. Before troubleshooting, check for multiple fault codes. Possible causes: 1)Signal circuit open or shorted to ground in the engine harness or sensor2)Supply wire open or shorted to ground. Possible repairs: 1)Replace the crankcase pressure sensor.2)Repair or...

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on Quickserve™ Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. This check is only performed at keyswitch OFF, during the ECM powerdown. During this diagnostic check, the ECM monitors the value of the EGR differential pressure sensor. If this value is outside of a specified range, Fault Code 1866 is set active. Possible causes: 1)A damaged EGR differential pressure sensor2)High resistance in the wiring harness on the signal or return wire3)Plugged or restricted EGR differential pressure sensor...

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. The aftertreatment diesel particulate filter outlet temperature sensor shares return wires in the OEM harness with other sensors. A shorted return can cause multiple fault codes to be active. Possible causes: 1)Open return circuit in the harness, connectors or sensor2)Open signal circuit or shorted to a voltage source. Possible repairs: 1)Replace the aftertreatment diesel particulate filter outlet temperature sensor.2)The removal and installation of the connector may correct...

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. The aftertreatment diesel particulate filter outlet temperature sensor shares return wires in the OEM harness with other sensors. A shorted return can cause multiple fault codes to be active. Possible causes: 1)Signal shorted to ground in the harness2)Signal shorted to return or ground in the sensor. Possible repairs: 1)Replace the aftertreatment diesel particulate filter outlet temperature sensor.2)Replace the OEM harness.3)Replace the aftertreatment harness.4)Replace all interconnects.5)Replace the ECM....

Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM. Possible causes: 1)Stuck in-range aftertreatment diesel particulate filter outlet temperature sensor2)High resistance in the aftertreatment diesel particulate filter outlet temperature sensor signal or return wires. Possible repairs: 1)If no short is found, replace the temperature sensor that is reading higher or lower than the other sensors.2)Replace the aftertreatment diesel particulate filter outlet temperature sensor.3)Replace the OEM harness.4)Replace the aftertreatment harness.5)Replace all interconnects.6)Replace the ECM. PACCAR PX-8 CM2150 (2007-09) Fault Code:...