Invalid Data Received From Park Brake Control Module
The U0429 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Park Brake Control Module. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $250 - $900 (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
- Electronic parking brake warning light on
- Parking brake not engaging fully
- Parking brake not releasing
- Hill hold assist not working
- Auto hold feature disabled
Probable Causes (Ranked by Likelihood)
- Failed electronic parking brake module Very High
- Park brake actuator sending bad data High
- CAN bus error at park brake module Moderate
- Park brake cable adjustment needed Low
Step-by-Step Diagnostic Procedure
-
Scan park brake module for codes
-
Test park brake actuator
-
Check brake cable adjustment
-
Verify CAN bus at park brake module
Frequently Asked Questions
Can I drive with U0429?
Short distances. The parking brake may not hold properly. Use wheel chocks when parked.
What causes U0429?
Usually a failed electronic parking brake module or actuator.
How much does U0429 cost to fix?
Typically $250 to $900.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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