Cummins ISC CM2150 (2007-09) Fault Code: 298 PID: 443 SPN: 1388 FMI: 4 Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage or open circuit detected at the OEM pressure circuit.

Name: Cummins ISC CM2150 (2007-09) Fault Code: 298 PID: 443 SPN: 1388 FMI: 4 Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage or open circuit 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)Signal circuit open or shorted to ground in the OEM harness or sensor
2)Supply line open or shorted to ground.

Possible repairs:

1)Replace the OEM pressure sensor.
2)Repair or replace the OEM harness.
3)Replace the ECM.