NHTSA ID Number: 10214697
Manufacturer Communication Number: TSB220043
TSB/Document Date: 2022-06-27
Summary
This Technical Service Bulletin describes the verification and resolution of an issue with the aftertreatment diesel exhaust fluid (DEF) controller is causing line heater fault codes to come active after installation in cold climates. This is an update to a previously submitted communication.
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TSB/Document ID: TSB220043
Replacement Service Bulletin Number:
MFR Communication Date: 2022-05-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FUEL SYSTEM, DIESEL
MFR Component System:
MFR Component Subsystem:
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6/6/22, 11:23 AM
New Diesel Exhaust Fluid (DEF) Controller Causing Line Heater Fault Codes: 3258, 3261, and 3425
Technical Service Bulletin
Technical Service Bulletin: TSB220043
Released Date: 12-May-2022
New Diesel Exhaust Fluid (DEF) Controller Causing Line Heater Fault Codes: 3258,
3261, and 3425
New Diesel Exhaust Fluid (DEF) Controller Causing
Line Heater Fault Codes: 3258, 3261, and 3425
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.
Contents
Product Affected
ISB6.7 CM2250
ISC8.3 CM2250
ISL9 CM2250
ISX12/ISX11.9 CM2250
ISX15
CM2250
Issue Summary
An issue with the aftertreatment diesel exhaust fluid (DEF) controller is causing line heater fault
codes to come active after installation in cold climates.
Symptom:
Line heater fault codes: FC3258, FC3261, and FC3425, are active after the installation of a
new DEF controller.
Root Cause:
Fault codes are caused by a DEF controller issue.
Verification
DEF controller compatibility issue causes the DEF controller to fail the internal line heater
diagnostic test and triggers line heater fault codes when the line heater circuit is activated.
This issue affects DEF controllers, Part Numbers 5283311 and 5283311RX, built between 5
May 2021 and 15 December 2021.
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6/6/22, 11:23 AM
New Diesel Exhaust Fluid (DEF) Controller Causing Line Heater Fault Codes: 3258, 3261, and 3425
Part Identification
The build date code printed on the DEF controller is in YY-MM-DD format.
Example Date: 21-06-11 is 11 June 2021. See Figure 1.
DEF controllers built within the affected time period with a green dot on the DEF controller
label have been recalibrated to address the line heater fault code issue and are good parts.
See Figure 2.
Figure 1, Example Date on DEF Controller Label.
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6/6/22, 11:23 AM
New Diesel Exhaust Fluid (DEF) Controller Causing Line Heater Fault Codes: 3258, 3261, and 3425
Figure 2, DEF Controller Label with Green Dot.
Resolution
DEF controllers marked with a green dot, or built outside of the affected time period, must be
utilized.
Work is in-process to release a service DEF controller calibration fix for the affected DEF
controllers built between 5 May 2021 and 15 December 2021, but timing for this fix has not
been finalized.
Document History
Date
Details
2022-3-4
Module Created
2022-5-12
Updated Part Identification section and added Figure 2.
Last Modified: 12-May-2022
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6/6/22, 11:23 AM
New Diesel Exhaust Fluid (DEF) Controller Causing Line Heater Fault Codes: 3258, 3261, and 3425
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