OBD Guide
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B1372

Left Rear Door Handle Unlock Circuit No Sub Type Information

B1372 is an OBD-II diagnostic trouble code meaning: Left Rear Door Handle Unlock Circuit No Sub Type Information. Common causes: open or short circuit in wiring harness, unlock solenoid valve malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Left rear door unlock does not work
  • The door does not open with the button or remote key
  • Hazard warning light flashes when attempting to unlock

Causes

  • Open or short circuit in wiring harness
  • Unlock solenoid valve malfunction
  • Problem with the door control unit
  • Corrosion of contacts or connectors

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the solenoid valve
  3. Diagnose the door control unit
  4. Clean or replace corroded contacts

Related codes

B1371B1373B1374

FAQ

What does the B1372 code mean?

B1372 is an OBD-II diagnostic trouble code that indicates: Left Rear Door Handle Unlock Circuit No Sub Type Information

What causes a B1372 error code?

The most common causes of B1372 include: Open or short circuit in wiring harness; Unlock solenoid valve malfunction; Problem with the door control unit; Corrosion of contacts or connectors.

How do I fix a B1372 diagnostic trouble code?

To fix B1372: Check wiring harness for damage. Check the operation of the solenoid valve. Diagnose the door control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1372?

Limited driving only, diagnose soon

How much does it cost to fix B1372?

The estimated repair cost for B1372 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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