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Auxiliary Pressure Sensor Input 1 Circuit – Voltage Below Normal or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 298 PID: P443 SPN: 1388 FMI: 4 LAMP: Amber SRT: |
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. |
None on performance. |
 Auxiliary Pressure Sensor Input 1 Circuit
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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. 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 circuit open or shorted to ground in the OEM harness or sensor
- Supply line open or shorted to ground.
Refer to Troubleshooting Fault Code t05-298
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