This document is a fault code 115 DTCs troubleshooting PDF for the Engine Crankshaft Speed/Position and Camshaft Speed/Position Sensor Circuits. It explains the red STOP ENGINE fault, the reversed sensor signal condition, ECM response, clearing conditions, and diagnostic steps used with a service tool.
Official fault code 115 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350 (2013-17) |
| System/Group | DTCs; Engine Crankshaft Speed/Position and Camshaft Speed/Position Sensor Circuits |
| Publication no. | Not stated in the extract |
| Year/Revision | Unknown; copyright 2017 shown |
| Pages | 4 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code: 115
- PID: P190
- SPN: 612
- FMI: 2/2
- LAMP: Red
- ENGINE MAGNETIC SPEED/POSITION LOST BOTH OF TWO SIGNALS – DATA ERRATIC, INTERMITTENT, OR INCORRECT
- 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 Fault Code 115.
- Step 2A) Check if an ECM calibration update is available.
- Step 2B) Disable the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2350 engines in the 2013-17 DTC group, where the ECM monitors crankshaft position and camshaft position signals. The extract does not identify specific truck makes or chassis models, and it states that crankshaft position and camshaft position sensor location varies by engine model. For official manufacturer information, visit Cummins.
Who needs this fault code 115 DTCs manual
This manual is useful for mechanics, diesel diagnostic technicians, and workshop owners handling a no-start or shutdown complaint with a red STOP ENGINE lamp. It focuses on checking whether the crankshaft position sensor and camshaft position sensor wiring harness connectors are reversed, then validating the repair with a key cycle, idle run, and diagnostic tool status check.
The procedure describes how the ECM provides a 5-volt supply and return circuit to Hall effect position sensors, interprets signal input as engine speed, and detects when the crankshaft and camshaft inputs are reversed. It also notes that EGR valve operation will be disabled and engine torque can be reduced if the fault remains active for an extended period. Full PDF available in the DiagTechPro manuals library, free account required to download.
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