Cummins fault code 1696 is the Cummins Sensor Supply 5 – Voltage Below Normal or Shorted to Low Source document for the ISX11.9 CM2250 (2010-12) engine platform, a 19-page PDF that reproduces the official fault code write-up read with Cummins INSITE. Sensor supply 5 in the ECM OEM harness connector provides a 5-volt supply to the diesel particulate filter differential pressure sensor, remote accelerator, engine coolant level sensor, fan speed sensor and accelerator position sensor 2.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISX11.9, ISX15, ISB6.7, ISC8.3 and ISL9 CM2250 |
| System / group | ISX11.9 CM2250 (2010-12) / DTCs |
| Fault code | 1696 — PID S232, SPN 3513, FMI 4/4 |
| Warning lamp | Amber |
| Publication reference | Cummins troubleshooting bulletin 2883445; procedures 019-017 and 019-031 |
| Pages | 19 |
| File size | 0.2 MB |
| Format | |
| Language | English |
What Cummins fault code 1696 means
It sets when the ECM detects sensor supply 5 voltage is less than 4.75 VDC for more than 1 second. The engine is limited to limp-home throttle control with a severe power derate. The document walks a technician through the summary and the guided troubleshooting steps needed to confirm and clear the code.
Document table of contents
- Overview and circuit description
- Component location
- Conditions for running the diagnostics
- Conditions for setting the fault code
- Action taken when the fault code is active
- Conditions for clearing the fault code
- Shop Talk and possible causes
- Associated procedures and guided troubleshooting steps
Applicable truck models
This troubleshooting document covers Cummins ISX11.9, ISX15, ISB6.7, ISC8.3 and ISL9 CM2250 engines in Class 6 to 8 trucks. It is filed under the ISX11.9 CM2250 (2010-12) / DTCs group and also applies to ISX12 CM2250 installations, so confirm the engine dataplate before ordering parts. Cross-reference the calibration revision with Cummins official engine support before clearing the code.
Who needs this Cummins fault code 1696 manual
Heavy-duty diesel technicians, fleet maintenance teams and workshop owners diagnosing a low sensor supply 5 voltage use this reference to read SPN 3513 / FMI 4/4 correctly and to follow the guided steps in INSITE. The possible causes it lists include:
- a short circuit to ground in a supply wire
- a short between a supply wire and a return wire
- a damaged sensor
- a damaged ECM power supply
The full 19-page PDF for sensor supply 5 fault code 1696 is available in the DiagTechPro manuals library; a free account is required to download.
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