Cummins ISC CM2150 (2007-09) Fault Code: 297 PID: 443 SPN: 1388 FMI: 3 Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the OEM pressure circuit.

Name: Cummins ISC CM2150 (2007-09) Fault Code: 297 PID: 443 SPN: 1388 FMI: 3 Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the OEM pressure circuit. - EcuForce truck
Brand: Cumminz

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.
Possible causes:

1)Open return circuit in the harness, connectors, or sensor
2)Signal circuit shorted to sensor supply or battery voltage.

Possible repairs:

1)Replace the OEM pressure sensor.
2)Replace the ECM.