This Cummins 1241 fault code document is a diagnostic procedure for accelerator pedal or lever position sensor 2 circuit voltage below normal or shorted to low source. It explains the circuit, fault conditions, limp home effect, OEM harness checks, ECM response tests, and repair validation steps for the ISB6.7 CM2350 platform.
Official Cummins 1241 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350, 2013-17 |
| System/Group | DTCs; accelerator pedal or lever position sensor 2 circuit |
| Publication no. | Not stated in the extract |
| Year/Revision | Copyright © 2017; vehicle year unknown |
| Pages | 12 |
| File size | 0.7 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code: 1241
- PID: S385
- SPN: 2623
- FMI: 4
- LAMP: Amber
- Accelerator Pedal or Lever Position Sensor 2 Circuit – Voltage Below Normal or Shorted to Low Source
- 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
- Check for sensor supply fault codes
- Inspect the accelerator pedal position sensor and connector pins
- Check the accelerator pedal position sensor supply voltage and return circuit
- Check for an open circuit in the OEM harness
- Check for a pin-to-pin short circuit in the OEM harness
- Check for a pin-to-ground short circuit in the OEM harness
- Check if a calibration update is available
- Disable and clear the fault code
Applicable truck models
This file applies to Cummins ISB6.7 CM2350 engines in the 2013-17 coverage group where Fault Code 1241 is used for the accelerator pedal position sensor 2 signal circuit. The extract does not name specific truck makes or chassis models; it directs users to the OEM service manual and the appropriate OEM wiring diagram for connector pin identification and harness routing. For engine platform information, visit the Cummins official website.
Who needs this Cummins 1241 fault code manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this procedure when an amber CHECK ENGINE lamp or MIL is linked to low voltage on accelerator pedal position sensor 2. The document is also useful when checking for Fault Code 1696, Fault Code 1239, damaged connector pins, open supply or signal circuits, and OEM harness shorts to ground.
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