Lost Communication With Door Control Module D
The U0201 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Door Control Module D. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $150 - $450 (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
- Fourth door power window inoperative
- Fourth door lock not responding
- Door ajar warning stays on
- Interior light not triggered by fourth door
Probable Causes (Ranked by Likelihood)
- Failed fourth door control module Very High
- Broken wires in door jamb harness High
- Water intrusion in door panel Moderate
- Corroded connector pins Low
Step-by-Step Diagnostic Procedure
-
Inspect door jamb wiring for breaks
-
Check power and ground at door module
-
Test CAN communication at module connector
-
Verify door module fuse integrity
Frequently Asked Questions
Can I drive with U0201?
Yes. Only the affected door controls are impacted. All other vehicle systems function normally.
What causes U0201?
Usually broken wires in the door jamb boot or a failed door control module.
How much does U0201 cost to fix?
Typically $150 to $450. Wire repair is cheaper while module replacement costs more.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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