Cummins fault code 1932 is the Cummins Aftertreatment Doser – Data Erratic, Intermittent, or Incorrect document for the ISX11.9 CM2250 (2010-12) engine platform, a 9-page PDF that reproduces the official fault code write-up read with Cummins INSITE. The aftertreatment doser injects diesel fuel into the exhaust to raise temperature for active diesel particulate filter regeneration, and before each regeneration the ECM runs a leak-down test on the aftertreatment fuel injector, fuel pressure sensor and fuel shutoff valve.
Official document details
| Brand | Cummins |
| Model coverage | Cummins ISX11.9 CM2250 and ISX15 CM2250 |
| System / group | ISX11.9 CM2250 (2010-12) / DTCs |
| Fault code | 1932 — PID S382, SPN 3556, FMI 2/2 |
| Warning lamp | Amber |
| Publication reference | Cummins troubleshooting bulletin 2883445; procedures 011-042, 011-052, 011-054 and 019-032 |
| Pages | 9 |
| File size | 0.2 MB |
| Format | |
| Language | English |
What Cummins fault code 1932 means
It sets when the ECM detects an internal or external fuel leak in the aftertreatment fuel system, such as a stuck-open or leaking aftertreatment fuel injector. Active aftertreatment diesel particulate filter regeneration is disabled until the next key cycle, and engine torque is reduced after extended operation. 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 CM2250 and ISX15 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 1932 manual
Heavy-duty diesel technicians, fleet maintenance teams and workshop owners diagnosing an aftertreatment doser fuel leak use this reference to read SPN 3556 / FMI 2/2 correctly and to follow the guided steps in INSITE. The possible causes it lists include:
- a stuck-open or leaking aftertreatment fuel injector
- an external leak in the aftertreatment fuel injector system
The full 9-page PDF for aftertreatment doser fault code 1932 is available in the DiagTechPro manuals library; a free account is required to download.
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