OBD Guide
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B1574

Door Ajar Left Right Switch Circuit Short To Ground

B1574 is an OBD-II diagnostic trouble code meaning: Door Ajar Left Right Switch Circuit Short To Ground. Common causes: damage to the door wiring harness, malfunction of the door sensor itself. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • False activation of the door open indicator on the dashboard
  • Incorrect operation of the interior lighting (may not go out)
  • Problems with central locking (automatic locking does not work)

Causes

  • Damage to the door wiring harness
  • Malfunction of the door sensor itself
  • Short circuit due to corrosion or damaged insulation
  • Problems with contacts in connectors

How to Fix

  1. Visually inspect the wiring harness in the doorway for damage
  2. Checking the status of the door sensor
  3. Testing a circuit for short circuit using a multimeter
  4. Replacing damaged wires or sensor
  5. Cleaning contacts in connectors

Related codes

B1570B1571

FAQ

What does the B1574 code mean?

B1574 is an OBD-II diagnostic trouble code that indicates: Door Ajar Left Right Switch Circuit Short To Ground

What causes a B1574 error code?

The most common causes of B1574 include: Damage to the door wiring harness; Malfunction of the door sensor itself; Short circuit due to corrosion or damaged insulation; Problems with contacts in connectors.

How do I fix a B1574 diagnostic trouble code?

To fix B1574: Visually inspect the wiring harness in the doorway for damage. Checking the status of the door sensor. Testing a circuit for short circuit using a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1574?

Limited driving only, diagnose soon

How much does it cost to fix B1574?

The estimated repair cost for B1574 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat