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 fault code is logged when the ECM battery supply voltage exceed 36-VDC. Causes of this fault code include:
1)Faulty alternator or regulator that is overcharging the system
2)Batteries connected in series instead of parallel
Possible repairs:
1)Install the battery system correctly.
2)Repair or replace the alternator, regulator, and/or the OEM wiring to the alternator.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 441 PID: 168 SPN: 168 FMI: 1 Battery 1 Voltage – Data Valid but Below Normal Operational Range – Moderately Severe Level. ECM supply voltage is below the minimum system voltage level.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 435 (ISC/ISL) PID: 100 SPN: 100 FMI: 2 Engine Oil Rifle Pressure – Data Erratic, Intermittent, or Incorrect. The engine oil pressure sensor is reading an erratic value at key ON.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 435 (ISB) PID: 100 SPN: 100 FMI: 2 Engine Oil Rifle Pressure – Data Erratic, Intermittent, or Incorrect. An error in the engine oil pressure switch signal was detected by the ECM.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 432 PID: SID 230 SPN: 558 FMI: 13 Accelerator Pedal or Lever Idle Validation Circuit – Out of Calibration. Voltage at idle validation on-idle and off-idle circuit does not match accelerator pedal position.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 431 PID: SID 230 SPN: 558 FMI: 2 Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 431 PID: SID 230 SPN: 558 FMI: 2 Accelerator Pedal or Lever Idle Validation Circuit – Data Erratic, Intermittent, or Incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.