OBD Guide

B1321

Driver Door Ajar Circuit Short To Battery

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • False messages about the driver's door not being closed
  • Alarm going off for no reason
  • Incorrect operation of interior lighting
  • Problems with central locking

Causes

  • Damage to the wiring harness in the doorway
  • Short circuit in the door sensor
  • Connector pin corrosion
  • Body control module (BCM) malfunction

How to Fix

  1. Check the condition of the wiring harness in the doorway
  2. Inspect the sensor contacts and connectors for corrosion
  3. Check the resistance of the door sensor
  4. Check the continuity of the wire circuit using a multimeter
  5. If necessary, replace the sensor or repair the wiring harness

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