OBD Guide
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B1747

Mirror Passenger Horizontal Switch Circuit Short To Battery

B1747 is an OBD-II diagnostic trouble code meaning: Mirror Passenger Horizontal Switch Circuit Short To Battery. Common causes: short circuit in wiring harness, 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

  • Passenger mirror horizontal adjustment failure
  • Spontaneous movement of the mirror
  • Malfunction indicator light comes on

Causes

  • Short circuit in wiring harness
  • Mirror adjustment switch malfunction
  • Damage to the mirror control module
  • Contact corrosion

How to Fix

  1. Check the wiring harness for damage and short circuits.
  2. Test the mirror adjustment switch
  3. Check contacts for corrosion
  4. Replace switch or wiring harness if necessary
  5. Reset the fault code and check the system operation

Related codes

B1748B1749B1750

FAQ

What does the B1747 code mean?

B1747 is an OBD-II diagnostic trouble code that indicates: Mirror Passenger Horizontal Switch Circuit Short To Battery

What causes a B1747 error code?

The most common causes of B1747 include: Short circuit in wiring harness; Mirror adjustment switch malfunction; Damage to the mirror control module; Contact corrosion.

How do I fix a B1747 diagnostic trouble code?

To fix B1747: Check the wiring harness for damage and short circuits.. Test the mirror adjustment switch. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1747?

Do not drive — repair immediately

How much does it cost to fix B1747?

The estimated repair cost for B1747 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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