ISM code 429 DTCs is the DiagTechPro reference page for this Cummins diagnostic fault code 429 document, a 5-page PDF sourced from TruckFaultCodes.com (Copyright 2017) covering the lamp: amber water – in – fuel indicator sensor circuit – voltage below normal, or shorted to low source isx – condition. The water-in-fuel sensor is attached to the fuel filter. The electronic control module (ECM) provides a 5 VDC reference signal to the water- in-fuel sensor. When the condition is detected the ECM logs the fault and illuminates the amber warning lamp.
ISM code 429 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | Water-In-Fuel Sensor Indicator ISM- Water-In-Fuel Sensor Indicator (ISM CM871, 2007-09) |
| System / Group | ISM CM871 (2007-09) / DTCs |
| Fault identifier | Code 429 (PID P097, SPN 97, FMI 4/4) |
| Warning lamp | Amber |
| Source | TruckFaultCodes.com |
| Year / Revision | Copyright 2017 |
| Pages | 5 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Shop Talk
- Troubleshooting Steps
- Repair verification and clearing fault codes
Applicable truck models
This document applies to Cummins Water-In-Fuel Sensor Indicator ISM- Water-In-Fuel Sensor Indicator electronic engines in the ISM CM871 (2007-09) family used in on-highway and vocational trucks. The water-in-fuel sensor is integrated into the bottom of the OEM supplied suction fuel filter. Verify the electronic control module (ECM) calibration is correct. If necessary, recalibrate the ECM. The troubleshooting section walks through connector and pin inspection, circuit measurements and step-by-step checks, then confirms code 429 is inactive before all fault codes are cleared. Verify engine calibration and coverage against the official Cummins engine support site before ordering parts.
Who needs this ISM code 429 DTCs manual
Any mechanic or workshop owner diagnosing code 429 DTCs needs this PDF to follow the factory diagnostic steps in the correct order and avoid replacing parts that are still good. Possible causes of this fault code include: – Signal circuit shorted to ground in the harness, sensor, or connector.
Related manuals library
The full PDF is available in the DiagTechPro manuals library; a free account is required to download.
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