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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.
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 drops below 6-VDC.
1)Verify that the ECM unswitched power supply is coming from the batteries and not the starter or other device. Check for possible weak batteries.
2)If the ECM unswitched battery supply is taken from the starter, check for low voltage during cranking. Low voltage during cranking can cause the ECM power supply to drop below specifications and log Fault Code 441.
Possible repairs:
1)Tighten the loose connections and clean the terminals.
2)Charge or replace the battery(s).
3)Replace the fuse.
4)Repair or replace the OEM power harness.
5)Repair or replace the damaged wires.
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.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 429 PID: 97 SPN: 97 FMI: 4 Water-in-Fuel Indicator Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the water-in-fuel circuit.