U0545

Invalid Data Received From Running Board Control Module A

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Automatic steps don't work
Error message on the dashboard
Footrests do not extend/retract
Intermittent operation of the footrests
Check Engine light comes on

Causes

Malfunction of the footrest control module
Damage to the wiring harness to the module
Poor contact in connectors
Module power problems
Software error in the module

How to Fix

Check connections and wiring to the module
Check the power supply and ground of the module
Scan the module for errors
If necessary, replace the control module
Update module software

Related codes

U0544 U0546 U0547