U0251

Lost Communication With Running Board Control Module B

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

The step does not work or does not work correctly
Check Engine light comes on
Errors in other vehicle systems
Problems with automatic door opening

Causes

Broken or damaged wiring
Step control module B malfunction
Module power problems
Contact corrosion
Problems with the CAN bus

How to Fix

Check the integrity of the wiring to the module
Check the power supply and ground of the module
Inspect contacts for corrosion
Check module functionality
Scan the CAN bus for errors

Related codes

U0250 U0252 U0253