Lost Communication With Door Control Module C
What does U0200 mean?
The U0200 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Door Control Module C. This is a low severity code.
Common Symptoms
- Rear door power window inoperative
- Rear door lock not responding to remote or switch
- Rear door ajar warning stays on
- Child safety lock indicator not working
- Rear door courtesy light not functioning
Probable Causes (Ranked by Likelihood)
- Failed rear door control module Very High
- Broken wires in rear door jamb boot High
- Water intrusion in rear door panel Moderate
- Corroded connector at rear door module Moderate
Step-by-Step Diagnostic Procedure
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Check for broken wires in the rear door jamb flex area
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Inspect the rear door module connector for water damage
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Verify power and ground at the rear door control module
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Check door module fuses in the interior fuse box
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Scan the body control module for related diagnostic codes
Frequently Asked Questions
Can I drive with code U0200?
Yes, safe to drive. Only the affected rear door window and lock controls are impacted. The door can still be opened and closed manually.
What causes U0200?
Most commonly broken wires in the rear door jamb boot. Rear doors on crew cab trucks and four-door sedans have this issue as the wiring flexes over time.
Is U0200 expensive to fix?
Usually $150 to $450. Door jamb wire repair is relatively straightforward. Rear door modules are typically less expensive than front door modules.