Invalid Data Received From Door Lock Module
The U0445 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Door Lock Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (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
- Doors locking and unlocking on their own
- Key fob range reduced
- Keyless entry intermittent
- Door lock not responding to button
- Walk-away auto lock not working
Probable Causes (Ranked by Likelihood)
- Failed door lock module Very High
- Key fob battery low High
- CAN bus interference Moderate
- Door lock actuator sticking Low
Step-by-Step Diagnostic Procedure
-
Replace key fob battery
-
Check door lock actuator operation
-
Scan lock module for codes
-
Test for RF interference near vehicle
Frequently Asked Questions
Can I drive with U0445?
Yes. Manually lock and unlock doors if keyless entry is unreliable.
What causes U0445?
Often just a low key fob battery. Replace that first before further diagnosis.
How much does U0445 cost to fix?
Typically $100 to $500. A key fob battery costs $5-10.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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