U01BA

Lost Communication With Park Lock/Pawl Control Module

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
The car may go into emergency mode
Gear shifting problems
Inability to take the car out of parking mode
Error message on the dashboard

Causes

Open or short circuit in the parking lock module circuit
Parking lock control module malfunction
Problems with module power or grounding
Wiring harness damage
Software error in the ECU

How to Fix

Check the integrity of the wiring harness to the parking lock module
Check fuses and relays associated with the module
Diagnose the parking lock module for faults
If necessary, replace the parking lock module
Update ECU software if appropriate TSBs are available

Related codes

U01BB U01BC U0100