Lost Communication With Power Running Board Module
The U0252 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Power Running Board Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $300 - $1,200 (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
- Power running boards not deploying
- Running boards stuck in extended or retracted position
- Running board motor grinding noise
- Running board warning light on
Probable Causes (Ranked by Likelihood)
- Failed running board motor Very High
- Running board linkage damage High
- CAN bus wiring fault to running board module Moderate
- Debris blocking running board mechanism Low
Step-by-Step Diagnostic Procedure
-
Inspect running board mechanism for debris
-
Check running board motor operation
-
Scan running board module for codes
-
Test CAN bus wiring to module
Frequently Asked Questions
Can I drive with U0252?
Yes. If running boards are stuck extended, be aware of reduced ground clearance.
What causes U0252?
Usually a failed motor or damaged linkage. Debris and ice buildup are common causes.
How much does U0252 cost to fix?
Typically $300 to $1,200 depending on motor versus linkage repair.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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