SPN 441 - FMI 4 (Fault Code 294)

SPN 441 - FMI 4 (Fault Code: 294)

Auxiliary Temperature Sensor Input 1 Circuit

Fault Code: 294
PID(P), SID(S): P441
SPN: 441
FMI: 4

REASON: Auxiliary Temperature Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at OEM auxiliary temperature circuit.

EFFECT: None on performance.

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

Component Location:
The OEM temperature sensor input will vary depending on application. Refer to the OEM troubleshooting and repair manual for sensor location.

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:
• Signal shorted to ground in the harness
• Signal shorted to return or ground in the sensor.

Read More:
SPN 441 - FMI 3 (Fault Code 293)
SPN 441 - FMI 14 (Fault Code 292)


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