Left Rear Door Lock Actuator Circuit Short
The B0322 code means the vehicle's onboard diagnostic system has detected: Left Rear Door Lock Actuator Circuit Short. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $80 - $350 (parts and labor)
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- Left Rear door will not lock electronically
- Left Rear door lock makes clicking noise
- Key fob does not operate left rear lock
- Left Rear lock indicator incorrect on dash
Probable Causes (Ranked by Likelihood)
- Faulty left rear door lock actuator Very High
- Damaged wiring in left rear door High
- Door lock relay failure Moderate
- BCM door lock output fault Low
Step-by-Step Diagnostic Procedure
-
Test left rear lock actuator with direct power
-
Check wiring through left rear door boot
-
Verify BCM lock command with scan tool
-
Inspect door lock relay operation
Frequently Asked Questions
Why does only one door not lock?
A single door lock failure usually indicates a faulty actuator or broken wiring specific to that door.
Can I lock the door manually?
Yes, most vehicles allow manual locking with the interior lock button or key, even when the electronic actuator fails.
How long does actuator replacement take?
Typically 1-2 hours as the door panel must be removed to access the lock assembly.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Share carcodefinder.com with a friend who needs to decode their check engine light.