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 ECM monitors the voltage level on this circuit. If it detects a voltage when the signal is commanded off, it records this fault code.
Possible causes:
1)Open circuit in the starter lockout relay, OEM harness, or connectors
2)Short circuit to a voltage source in the OEM harness or relay.
Possible repairs:
1)Replace the starter lockout relay.
2)Clean, repair, or replace the OEM harness.
3)Repair or replace the OEM harness.
4)Replace the ECM.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 559 (ISC/ISL) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid But Below Normal Operating Range – Moderately Severe Level. The engine control module (ECM) has detected that fuel pressure is lower than commanded pressure.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 559 (ISB/QSB3.3) PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operational Range – Moderately Severe Level. The ECM has detected that the fuel pressure is lower than commanded pressure.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 556 (ISC/ISL) PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid but Above Normal Operational Range – Most Severe Level.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 556 (ISB/QSB3.3) PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid but Above Normal Operational Range – Most Severe Level.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 555 (ISC/ISL) PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 555 (ISB/QSB3.3) PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level.