TSB220159

9/6/22, 9:10 AM
Fault Code 3838 on Kenworth™ and Peterbilt™ Chassis Equipped with Horton® Fan Controller
Technical Service Bulletin
Technical Service Bulletin: TSB220059
Released Date: 19-Aug-2022
Fault Code 3838 on Kenworth™ and Peterbilt™ Chassis Equipped with Horton® Fan
Controller
Fault Code 3838 on Kenworth™ and Peterbilt™
Chassis Equipped with Horton® Fan Controller
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.
Information Only - OEM Related Matter Not Covered By Cummins® - Contact Appropriate OEM
Dealer or OEM Representative For Additional Information
Contents
Product Affected
ISX12N CM2380 X120B
L9 CM2450 L126B
X12 N CMMDG1 X143B
X15 CM2450 X124
X15 CM2450 X134B
Issue Summary
Symptom:
Fault Code 3838
Root Cause:
Malfunctioning internal components within the fan controller jumper harness.
Verification
Vehicle equipped with Horton fan controller
Active or more than two inactive counts of Fault Code 3838 in the last 25 Engine hours
Resolution
Reference PACCAR TIB 42-060.
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220059.html
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9/6/22, 9:10 AM
Fault Code 3838 on Kenworth™ and Peterbilt™ Chassis Equipped with Horton® Fan Controller
Document History
Date
Details
2022-3-16
Module Created
2022-3-31
Added ISX12N CM2380 X120B
2022-8-19
Updated Resolution section.
Last Modified: 19-Aug-2022
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