This Cummins injector fault code document covers Fault Code 1142 for injector solenoid driver cylinder 3 on Cummins ISB6.7 CM2350 engines. It explains the circuit description, fault reason, diagnostic conditions, troubleshooting checks, repair decisions, and final clearing procedure for the amber CHECK ENGINE lamp or MIL.
Official Cummins injector fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350, 2013-17 |
| System/Group | DTCs; Injector Solenoid Driver Cylinder 3 – Mechanical System Not Responding or Out of Adjustment |
| Publication no. | Fault Code: 1142; PID: S003; SPN: 653; FMI: 7 |
| Year/Revision | Unknown; copyright 2017 |
| Pages | 7 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit Description
- Component Location
- Reason
- Effect
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code Is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Troubleshooting Steps
- Step 1A) Check for active fault codes.
- Step 1B) Check for injector circuit fault codes.
- Step 2B) Perform a single cylinder cutout diagnostic test.
- Step 3B) Inspect the fuel rail pressure sensor and connector pins.
- Step 4A) Monitor Commanded Fuel Rail Pressure and Measured Fuel Rail Pressure.
- Step 5A) Check if an ECM calibration update is available.
- Step 5B) Disable the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2350 engines in the 2013-17 coverage group. The extract identifies Fault Code 1142, SPN 653, FMI 7, and the number 3 fuel injector, with checks involving the ECM, engine harness, rocker housing pass-through connectors, internal injector harnesses, fuel rail pressure sensor, fuel pump actuator, high-pressure fuel supply pump, and OEM fuel drain lines. For current manufacturer information, visit Cummins official website.
Who needs this Cummins injector fault code manual
Mechanics and workshop owners use this manual when diagnosing possible reduced engine performance, rough operating, engine knock, engine misfire, or symptoms attributed to a single cylinder. It is also useful when verifying injector circuit fault codes, measured fuel rail pressure, drain line restriction, ECM calibration, and the Reset All Faults or disable-and-clear process.
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