OBD Guide
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B1443

Door Handle Switch Circuit Open

B1443 is an OBD-II diagnostic trouble code meaning: Door Handle Switch Circuit Open. Common causes: broken wire in the harness, oxidation of contacts. Estimated repair cost: $33–89.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Central locking malfunction
  • Incorrect operation of interior lighting
  • Error on the dashboard

Causes

  • Broken wire in the harness
  • Oxidation of contacts
  • Door handle switch malfunction
  • Poor connection in the connector

How to Fix

  1. Check the integrity of the wiring harness
  2. Check contacts for oxidation
  3. Check the functionality of the door handle switch
  4. Check the connections in the connector

Related codes

B1440B1441B1442

FAQ

What does the B1443 code mean?

B1443 is an OBD-II diagnostic trouble code that indicates: Door Handle Switch Circuit Open

What causes a B1443 error code?

The most common causes of B1443 include: Broken wire in the harness; Oxidation of contacts; Door handle switch malfunction; Poor connection in the connector.

How do I fix a B1443 diagnostic trouble code?

To fix B1443: Check the integrity of the wiring harness. Check contacts for oxidation. Check the functionality of the door handle switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1443?

Yes, but get it checked soon

How much does it cost to fix B1443?

The estimated repair cost for B1443 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat