TSB120309-013120

Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault Codes
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Technical Service Bulletin
Technical Service Bulletin:
Released Date: 04-Feb-2019
TSB120309
Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault
Codes
Fault Code 3714, 3712, 6255, and 6254 Active
with No Other Active Fault Codes
Core Issue
Product Affected
• All electronically controlled engines
Root Cause:
Due to a software issue, Fault Code 3714, 3712, 6255, and 6254 may become active
after adjusting INSITE™ electronic service tool multiplexing parameters or
troubleshooting other active selective catalytic reduction (SCR) related fault codes.
Confirmation
For some units that have a hardwired (analog) diesel exhaust fluid (DEF) tank level and
temperature sensor, Fault Codes 285 and 4572 will become active due to a software
parameter defaulted to mulitplexed. Even if INSITE™ electronic service tool is adjusted
correctly to reflect the analog sensors, Fault Code 3714 or 6255 will become active.
Other units may trigger SCR related Fault Code(s) 1682, 1683, 1713, 2976, 3151, 3238,
3241, 3258, 3261, 3423, 3425, 3558, 3559, 3563, 3567, 3568, 3572, 3574, 3575, 3596,
3748, 4156, 4169, or 4769. These fault codes will lead to Fault Code 3714 or 6255
(inducement) within 1 hour and will eventually lead to Fault Code 3712 or 6254 (severe
inducement) if not addressed. Even when those active fault(s) are addressed before
Fault Code 3714 or 6254 becomes active and are cleared, Fault Codes 3714 or 6255
and 3712 or 6254 will still become active due to a diagnostic not verifying that the fault
codes are cleared.
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2012/tsb120309.html
2/18/2019
Fault Code 3714, 3712, 6255, and 6254 Active with No Other Active Fault Codes
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Resolution
To correct the issue, troubleshoot all active fault codes. Verify all fault codes, except a
possible Fault Code 3714, 6255, 6254, or 3712, are inactive. Use INSITE™ 7.6
electronic service tool or higher to calibrate the engine control module (ECM) with the
latest calibration from QuickServe™ Online or the April 2013 INCAL Calibration DVD.
Once the ECM has the new software, all fault codes will be cleared.
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Document History
Date
Details
2012-12-14
Module Created
2013-2-8
Information Update
2018-6-13
Andrew Brooks
2018-7-19
Updated metadata to reflect Product Affected section.
2019-1-31
Added 3712, 6255, and 6254 references
Last Modified: 04-Feb-2019
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2012/tsb120309.html
2/18/2019