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, calibrate the ECM. Use the following procedure in the corresponding Troubleshooting and Repair Manual for the engine being serviced. At KEY ON, before the engine starts, the sensor readings for intake manifold pressure, barometric air pressure, and exhaust gas pressure are compared to each other. This fault code occurs if the exhaust gas pressure sensor reading is different from the other sensor readings. This check is only done once after...

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. Use the following procedure to calibrate the ECM, if necessary. Possible causes: 1)Intake air heater relay signal wire not connected to the relay2)Intake air heater relay return wire not connected to the relay3)Open circuit in the intake air heater relay signal wire4)Open circuit in the intake air heater relay return wire5)Intake air heater signal wire shorted to a voltage source. Possible repairs: 1)Replace the intake air heater relay.2)Repair or replace the OEM...

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. Possible causes: 1)A shorted intake air heater relay2)Intake air heater relay supply wire shorted to ground. Possible repairs: 1)Replace the intake air heater relay.2)Repair or replace the OEM harness.3)Replace the ECM. PACCAR PX-8 CM2150 (2007-09) Fault Code: 2555 PID: SID 070 SPN: 729 FMI: 3 Intake Air Heater 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at the intake air heater...

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. Possible causes: 1)A faulty transmission shift modulator2)An open circuit in the output device driver return wire3)A pin-to-pin short circuit in the output device driver wire. Possible repairs: 1)Replace the transmission shift modulator.2)Repair or replace the OEM harness.3)Replace the ECM. PACCAR PX-8 CM2150 (2007-09) Fault Code: 2556 PID: SID 070 SPN: 729 FMI: 4 Intake Air Heater 1 Circuit – Voltage Below Normal or Shorted to Low Source....

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. Possible causes: 1)A faulty transmission shift modulator2)An short circuit to ground on the output device driver line3)A short pin-to-pin in the output device driver line. Possible repairs: 1)Replace the transmission shift modulator.2)Repair or replace the OEM harness.3)Replace the ECM. PACCAR PX-8 CM2150 (2007-09) Fault Code: 2557 PID: SID 057 SPN: 697 FMI: 3 Auxiliary PWM Driver 1 – Voltage Above Normal or Shorted to High Source. High...