OBD Guide
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B1543

Seat Direction Switch Assembly Circuit Failure

B1543 is an OBD-II diagnostic trouble code meaning: Seat Direction Switch Assembly Circuit Failure. Common causes: open or short circuit in the circuit, seat direction switch malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Seat adjustment forward and backward does not work
  • Seat direction switch does not respond
  • The malfunction indicator on the instrument panel lights up

Causes

  • Open or short circuit in the circuit
  • Seat direction switch malfunction
  • Wiring harness damage
  • Contact corrosion
  • Problems with the seat control unit

How to Fix

  1. Check the continuity of the switch circuit
  2. Inspect the switch for damage
  3. Check the condition of the wiring harness
  4. Clean contacts from corrosion
  5. Replace switch or wiring harness if necessary

Related codes

B1540B1541B1542

FAQ

What does the B1543 code mean?

B1543 is an OBD-II diagnostic trouble code that indicates: Seat Direction Switch Assembly Circuit Failure

What causes a B1543 error code?

The most common causes of B1543 include: Open or short circuit in the circuit; Seat direction switch malfunction; Wiring harness damage; Contact corrosion.

How do I fix a B1543 diagnostic trouble code?

To fix B1543: Check the continuity of the switch circuit. Inspect the switch for damage. Check the condition of the wiring harness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1543?

Limited driving only, diagnose soon

How much does it cost to fix B1543?

The estimated repair cost for B1543 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat