PACCAR PX-8 CM2150 (2007-09) Fault Code: 2375 PID: 412 SPN: 412 FMI: 3 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at EGR temperature circuit.
Verify the 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 EGR temperature sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active.
Possible causes:
1)An open return circuit in the harness, connectors or sensor
2)An open signal circuit or shorted to a voltage source.
Possible repairs:
1)Replace the EGR temperature sensor.
2)Replace the ECM.
3)Repair or replace the engine harness.
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