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 catalyst inlet 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 inlet temperature sensor.2)The removal and installation of the connector may correct the fault.3)Replace the...

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, calibrate the ECM. Possible causes: 1)Stuck in-range aftertreatment diesel particulate filter inlet temperature sensor2)High resistance in the aftertreatment diesel particulate filter inlet 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 inlet temperature sensor.3)Replace the OEM harness.4)Replace the aftertreatment harness.5)Replace all interconnects. PACCAR PX-6 CM2150 (2007-09) Fault...

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, calibrate the ECM. This fault code is logged when the conversion efficiency of the DOC is calculated to be less than that required to perform an effective regeneration. Possible causes: 1)Soot plugging the front face of the aftertreatment diesel oxidation catalyst2)Engine oil or fuel contamination of the aftertreatment diesel oxidation catalyst3)A cracked or contaminated aftertreatment diesel oxidation catalyst4)A leaking exhaust system between the turbocharger and the diesel oxidation catalyst.5)Excessive automatic/stationary...

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. High voltage on the 5 volt supply wire can be caused by a short circuit to a power supply, a damaged sensor, or a damaged ECM power supply. Possible repairs: 1)Repair or replace the OEM harness.2)Replace the ECM. PACCAR PX-6 CM2150 (2007-09) Fault Code: 1691 PID: SPN: 3250 FMI: 13 Catalyst Efficiency – Out of Calibration. The temperature increase across the aftertreatment diesel oxidation catalyst is lower...

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. Low voltage on the 5-volt supply wire can be caused by a short circuit to ground in a supply wire, a short circuit between a supply wire and a return wire, a failed sensor, or a failed ECM power supply. Possible repairs: 1)Replace the accelerator/lever position sensor.2)Replace the aftertreatment diesel particulate filter differential pressure sensor.3)Replace the coolant level sensor.4)Replace the remote throttle.5)Replace the fan speed sensor.6)Replace the...