PACCAR MX (2004 Emissions) Fault Code: P2296 Common Rail Pressure Release Valve – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C4)
PACCAR MX (2004 Emissions) Fault Code: P2296 Common Rail Pressure Release Valve – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C4)
SET CONDITIONS:
This DTC is set when the ECU detects a higher 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 has a short circuit to supply.
2. A malfunction of the sensor or actuator
ADDITIONAL INFORMATION:
When this DTC is active:
1. The engine torque is reduced.
2. The engine runs in protection mode.
3. The rail pressure control is in the limp-home function.
4. The rail pressure is limited to approximately 800 bar.
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