Codes U0038, and code U0100

2017 HONDA CIVIC
158,289 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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JAMESODOUD
  • MEMBER
  • 1 POST
Codes U0038, and code U0100 appear with road departure mitigation and adaptive cruise control problems after reconnecting battery.
Jun 19, 2022 at 5:45 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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SQM
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

The codes
U0038 PT-CAN Malfunction (TCM ECU BUS-OFF)
U0100-00 : F-CAN Malfunction (EPS Control Unit-PCM)

These can get triggered due to any number of components. It can also be due to a wiring issue.

I have attached the troubleshooting guide for both of these codes below.
Follow those steps as it can help you determine the issue.

Let me know of any questions.
Thank you.
Jun 19, 2022 at 11:36 PM
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