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Auxiliary Temperature Sensor Input 1 Circuit – Voltage Below Normal or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 294 PID: P441 SPN: 441 FMI: 4 LAMP: Amber SRT: |
Auxiliary Temperature Sensor Input 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at OEM auxiliary temperature circuit. |
None on performance. |
 Auxiliary Temperature Sensor Input 1 Circuit
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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. Refer to Procedure 019-032 (ECM Calibration Code) in Section 19 in the corresponding Troubleshooting and Repair Manual for the engine being serviced.
Possible causes of this fault code include:
- Signal shorted to ground in the harness
- Signal shorted to return or ground in the sensor.
Refer to Troubleshooting Fault Code t05-294
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