OBD Guide
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B1442

Door Handle Switch Circuit Failure

B1442 is an OBD-II diagnostic trouble code meaning: Door Handle Switch Circuit Failure. Common causes: open or shorted door wiring harness, oxidation of switch contacts. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Backlight does not work when opening the door
  • Problems with central locking
  • False alarms
  • Indication of an open door when closed

Causes

  • Open or shorted door wiring harness
  • Oxidation of switch contacts
  • Mechanical damage to the switch
  • Body Control Module (BCM) Malfunction
  • Poor contact in connectors

How to Fix

  1. Diagnose the circuit with a multimeter
  2. Check the condition of the switch and contacts
  3. Inspect the wiring harness in the door hinge area
  4. If necessary, replace the switch or repair the wiring
  5. Check BCM operation

Related codes

B1440B1441B1443

FAQ

What does the B1442 code mean?

B1442 is an OBD-II diagnostic trouble code that indicates: Door Handle Switch Circuit Failure

What causes a B1442 error code?

The most common causes of B1442 include: Open or shorted door wiring harness; Oxidation of switch contacts; Mechanical damage to the switch; Body Control Module (BCM) Malfunction.

How do I fix a B1442 diagnostic trouble code?

To fix B1442: Diagnose the circuit with a multimeter. Check the condition of the switch and contacts. Inspect the wiring harness in the door hinge area. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1442?

Yes, but get it checked soon

How much does it cost to fix B1442?

The estimated repair cost for B1442 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat