OBD Guide

B356A

Vehicle Direction Warning Switch Circuit

B356A is an OBD-II diagnostic trouble code meaning: Vehicle Direction Warning Switch Circuit. Common causes: open or short circuit in wiring harness, direction warning switch malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The passive safety system fault indicator is on
  • No directional warnings
  • Incorrect operation of security systems

Causes

  • Open or short circuit in wiring harness
  • Direction warning switch malfunction
  • Problems with the control module
  • Contact corrosion
  • Bad connection

How to Fix

  1. Check the wiring harness for damage
  2. Check directional warning switch
  3. Check connections and contacts for corrosion
  4. Replace faulty components if necessary
  5. Reset the error and check if it appears again

Related codes

Error B356A by Vehicle Brand

FAQ

What does the B356A code mean?

B356A is an OBD-II diagnostic trouble code that indicates: Vehicle Direction Warning Switch Circuit

What causes a B356A error code?

The most common causes of B356A include: Open or short circuit in wiring harness; Direction warning switch malfunction; Problems with the control module; Contact corrosion.

How do I fix a B356A diagnostic trouble code?

To fix B356A: Check the wiring harness for damage. Check directional warning switch. Check connections and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B356A?

Do not drive — repair immediately

How much does it cost to fix B356A?

The estimated repair cost for B356A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat