Cummins fault 1691 is a 6-page diagnostic document for Cummins ISB6.7 CM2350 (2013-17) DTCs that addresses AFTERTREATMENT DIESEL OXIDATION. It identifies the reported condition, the diagnostic context, and the checks visible in this document. Use the procedure with the correct engine application and an appropriate diagnostic tool.
Cummins fault 1691 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350 (2013-17) DTCs |
| System or group | ISB6.7 CM2350 (2013-17) DTCs |
| Fault identifier | Fault Code 1691 |
| Pages | 6 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Circuit description and component location
- Reason and effect of the fault
- Conditions for running and setting diagnostics
- Action taken when the code is active
- Conditions for clearing the fault code
- Troubleshooting and repair validation steps
Applicable truck models
The extract identifies Cummins ISB6.7 CM2350 (2013-17) DTCs and describes ECM communication and diagnostic checks for the stated fault. Component locations and vehicle electronic control arrangements can vary by OEM options, so use the applicable OEM information when the procedure directs it. For manufacturer product information, visit Cummins.
Diagnostic context and procedure
The document describes the condition as AFTERTREATMENT DIESEL OXIDATION. Its stated reason is Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency – Data Valid but Below Normal Operating Range – Moderately Severe Level. The temperature increase across the aftertreatment catalyst is lower than expected. — 1 of 6 — www.TruckFaultCodes.com Copyright © 2017 2. The reported effect is Possible frequent need for aftertreatment regeneration.. The procedure instructs the technician to confirm whether the code is active, compare the relevant configuration or signals where specified, and follow the listed decision points rather than assuming a single failed part.
Who needs this Cummins fault 1691 manual
This Cummins fault 1691 manual is useful when a technician needs the document’s fault conditions, diagnostic sequence, and clearing criteria. The closing checks include using the diagnostic tool and verifying that the fault becomes inactive after the specified repair or configuration work.
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