PACCAR MX (2004 Emissions) Fault Code: P0522 Engine Oil Pressure – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C84)
PACCAR MX (2004 Emissions) Fault Code: P0522 Engine Oil Pressure – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C84)
SET CONDITIONS:
This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU.
DIAGNOSTIC CONDITION:
The diagnostic runs continuously when the ignition is keyed on.
RESET CONDITION:
The DTC changes to inactive after the diagnostic runs and passes.
POSSIBLE CAUSES:
1. The sensor or actuator signal wiring is interrupted.
2. The sensor or actuator signal wiring has a short circuit to ground.
3. A malfunction in the power supply of the sensor or actuator
4. A malfunction of the sensor or actuator
ADDITIONAL INFORMATION:
Multiple sensor related voltage-too-low DTCs can indicate a malfunction within a 5-V sensor power supply circuit of the PCI ECU.
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