This document is a Cummins 1683 fault code troubleshooting manual for the aftertreatment diesel exhaust fluid tank heater circuit. It explains the voltage above normal or shorted to high source fault, the disabled DEF tank heating effect, and the guided diagnostic path using INSITE™ electronic service tool.
Official Cummins 1683 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also references ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, and ISX15 CM2250 in the procedure coverage |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel exhaust fluid tank heater circuit |
| Publication no. | Not stated for this file; associated bulletin numbers include 4022254, 4022257, 4022250, and 2883445 |
| Year/Revision | Last Modified: 11-Jun-2010 |
| Pages | 11 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 1683
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes
- Guided Step 2 – Check the aftertreatment diesel exhaust fluid tank heater control valve and circuit
- Guided Step 3 – Check the aftertreatment diesel exhaust fluid controller and harness
- Guided Step 4 – Check ECM calibration and clear fault codes
Applicable truck models
This Cummins 1683 fault code file applies to the aftertreatment diesel exhaust fluid tank heater circuit on Cummins CM2250 engine platforms identified in the extract: ISB6.7 CM2250, ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, and ISX15 CM2250. The document notes that the diesel exhaust fluid tank heater control valve is near the DEF tank, while the tank heating coil is internal to the tank, and that exact component location varies by vehicle OEM. For manufacturer information, visit Cummins official website.
Who needs this 1683 fault code manual
This manual is for diesel technicians and workshop owners diagnosing active or inactive Fault Code 1683 with amber CHECK ENGINE lamp, MIL behavior, or disabled diesel exhaust fluid tank heating. It supports inspections of connectors, pins, seals, harness damage, the DEF tank heater control valve, the aftertreatment diesel exhaust fluid controller, and ECM calibration revision status.
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