SPN 1388 - FMI 3 (Fault Code 297)

SPN 1388 - FMI 3 (Fault Code: 297)
SPN1388 FMI3
Auxiliary Pressure Sensor Input 1 Circuit

Fault Code: 297
PID(P), SID(S): P443
SPN: 1388
FMI: 3

REASON: Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the OEM pressure circuit.

EFFECT: None on performance.

Circuit Description:
The original equipment manufacturer (OEM) has the option of wiring a pressure sensor input to the Cummins electronic control module (ECM). A specific calibration is then created to recognize this pressure sensor input.

Component Location:
The OEM pressure sensor input will vary depending on application.

Shop Talk:
  • 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 of this fault code include:
• Open return circuit in the harness, connectors, or sensor
• Signal circuit shorted to sensor supply or battery voltage.

Read More:
SPN 108 - FMI 2 (Fault Code 295)
SPN 1388 - FMI 14 (Fault Code 296)


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