OBD Guide
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B1174

Front Door Lock-Link Switch Right Unlock Circuit Malfunction

B1174 is an OBD-II diagnostic trouble code meaning: Front Door Lock-Link Switch Right Unlock Circuit Malfunction. Common causes: open or short circuit in wiring harness, door unlock switch malfunction. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Right front door won't unlock
  • Problems with central locking
  • Security light flashing

Causes

  • Open or short circuit in wiring harness
  • Door unlock switch malfunction
  • Problems with the door control unit
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Test the door unlock switch
  3. Check contacts for corrosion
  4. Replace faulty components

Related codes

B1173B1175B1176

FAQ

What does the B1174 code mean?

B1174 is an OBD-II diagnostic trouble code that indicates: Front Door Lock-Link Switch Right Unlock Circuit Malfunction

What causes a B1174 error code?

The most common causes of B1174 include: Open or short circuit in wiring harness; Door unlock switch malfunction; Problems with the door control unit; Contact corrosion.

How do I fix a B1174 diagnostic trouble code?

To fix B1174: Check the integrity of the wiring harness. Test the door unlock switch. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1174?

Limited driving only, diagnose soon

How much does it cost to fix B1174?

The estimated repair cost for B1174 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat