Invalid Data Received From Trailer Brake Module
The U0435 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Trailer Brake Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $700 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Trailer brake force inconsistent
- Trailer brakes applying too hard or too soft
- Trailer brake gain setting not holding
- Trailer brake controller showing errors
Probable Causes (Ranked by Likelihood)
- Trailer brake module sending bad data Very High
- Corroded trailer connector High
- Trailer brake wiring damage Moderate
- Incompatible trailer brake controller Low
Step-by-Step Diagnostic Procedure
-
Clean trailer brake connector
-
Check trailer brake wiring
-
Scan trailer brake module for codes
-
Verify brake controller compatibility
Frequently Asked Questions
Can I drive with U0435?
Short distances without a trailer. Do not tow until the braking issue is resolved.
What causes U0435?
Usually corroded trailer connector pins or damaged trailer brake wiring.
How much does U0435 cost to fix?
Between $200 and $700.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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