OBD Guide
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B1743

Mirror Passenger Vertical Switch Circuit Short To Battery

B1743 is an OBD-II diagnostic trouble code meaning: Mirror Passenger Vertical Switch Circuit Short To Battery. Common causes: wiring harness damage, mirror adjustment switch malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Inability to adjust the passenger mirror vertically
  • Spontaneous movement of the mirror
  • Malfunction indicator light comes on

Causes

  • Wiring harness damage
  • Mirror adjustment switch malfunction
  • Short circuit in the circuit
  • Problems with the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the mirror adjustment switch
  3. Check circuit for short circuit
  4. Replace switch or wiring harness if necessary

Related codes

B1740B1741B1742

FAQ

What does the B1743 code mean?

B1743 is an OBD-II diagnostic trouble code that indicates: Mirror Passenger Vertical Switch Circuit Short To Battery

What causes a B1743 error code?

The most common causes of B1743 include: Wiring harness damage; Mirror adjustment switch malfunction; Short circuit in the circuit; Problems with the control unit.

How do I fix a B1743 diagnostic trouble code?

To fix B1743: Check wiring harness for damage. Check the mirror adjustment switch. Check circuit for short circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1743?

Do not drive — repair immediately

How much does it cost to fix B1743?

The estimated repair cost for B1743 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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