Cummins fault code 352 is the Cummins ISM CM871 (2007-09) diagnostic reference for Sensor Supply 1 Circuit – Voltage Below Normal, or Shorted to Low Source, reported as PID S212, SPN 3509, FMI 4/4 with an Amber lamp. This 5-page workshop PDF covers the Sensor Supply 1 Circuit (ISX and ISM), giving the fault description, shop-talk notes, component location and the step-by-step troubleshooting tree. It is compiled from the TruckFaultCodes.com fault-code library (Copyright © 2017).
Official document details — Cummins fault code
| Brand | Cummins |
| Model coverage | ISM and ISX CM871 (2007-09) engines |
| System / Group | Sensor Supply 1 Circuit (ISX and ISM) / DTCs |
| Fault identifiers | PID S212, SPN 3509, FMI 4/4, Amber lamp |
| Source | TruckFaultCodes.com fault-code library (© 2017) |
| Pages | 5 |
| File size | 0.12 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code header (PID, SPN, FMI, lamp)
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Reading Cummins fault code 352
Sensor supply 1 of the ECM provides a 5-VDC feed for the barometric pressure sensor, engine oil pressure sensor, EGR differential pressure sensor and after-treatment fuel pressure sensor.
The Cummins Shop Talk section advises confirming the ECM calibration is correct and recalibrating if necessary. Documented possible causes include:
- a short circuit to ground in a supply line
- a short circuit between a supply line and a return line
- a failed sensor or a failed ECM power supply
Component location manual information
Sensor supply number 1 is located in the ECM engine harness connector and feeds several pressure sensors.
Applicable truck models
This document applies to Cummins ISM CM871 (2007-09) engines, and the same circuit description is shared with the ISX CM871 platform where noted in the extract. These engines power many Class 8 highway tractors and vocational trucks built by North American OEMs. Confirm the exact ECM calibration and OEM wiring against the manufacturer records; full engine support is published by Cummins official engine support.
Who needs this Cummins fault code 352 manual
Fleet technicians, independent diesel mechanics and workshop owners diagnosing an active sensor supply 1 circuit condition will use this sheet to follow the correct troubleshooting order instead of replacing parts on guesswork.
The full PDF is available in the DiagTechPro manuals library; a free account is required to download it.
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