TSB220059

Fault Code 3838 on Kenworth™ and Peterbilt™ Chassis Equipped with Horton® Fan Co... Page 1 of 2
Technical Service Bulletin
Technical Service Bulletin:
Released Date: 19-Aug-2022
TSB220059
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
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220059.html
9/7/2022
Fault Code 3838 on Kenworth™ and Peterbilt™ Chassis Equipped with Horton® Fan Co... Page 2 of 2
• 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.
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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https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2022/tsb220059.html
9/7/2022