OBD Guide
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B1392

Power Door Memory Lock Relay Circuit Failure

B1392 is an OBD-II diagnostic trouble code meaning: Power Door Memory Lock Relay Circuit Failure. Common causes: faulty door lock memory relay, open or short circuit in wiring harness. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Door lock position memory functions do not work
  • Door locks do not respond to memory settings
  • The malfunction indicator on the instrument panel lights up

Causes

  • Faulty door lock memory relay
  • Open or short circuit in wiring harness
  • Poor contact in relay or control unit connectors
  • Malfunction of the lock memory control unit

How to Fix

  1. Check the door lock memory relay for functionality
  2. Check the integrity of the wiring harness and connectors
  3. Test the lock memory control unit
  4. Replace faulty components

Related codes

B1390B1391B1393

FAQ

What does the B1392 code mean?

B1392 is an OBD-II diagnostic trouble code that indicates: Power Door Memory Lock Relay Circuit Failure

What causes a B1392 error code?

The most common causes of B1392 include: Faulty door lock memory relay; Open or short circuit in wiring harness; Poor contact in relay or control unit connectors; Malfunction of the lock memory control unit.

How do I fix a B1392 diagnostic trouble code?

To fix B1392: Check the door lock memory relay for functionality. Check the integrity of the wiring harness and connectors. Test the lock memory control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1392?

Yes, but get it checked soon

How much does it cost to fix B1392?

The estimated repair cost for B1392 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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