OBD Guide

B1645

Mirror Passenger Right Circuit Short To Battery

B1645 is an OBD-II diagnostic trouble code meaning: Mirror Passenger Right Circuit Short To Battery. Common causes: damage to the mirror wiring harness, short circuit inside the mirror. Estimated repair cost: $6–111.

Severity
Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–111 (est.)

Symptoms

  • The right electric mirror does not work
  • Heated right mirror does not work
  • Mirror circuit fuses blow
  • Mirror light flashes

Causes

  • Damage to the mirror wiring harness
  • Short circuit inside the mirror
  • Faulty relay or control unit
  • Contact corrosion
  • Mechanical damage to the mirror

How to Fix

  1. Check the condition of the mirror circuit fuses
  2. Inspect the wiring harness for damage
  3. Check the mirror circuit resistance
  4. Clean the connector contacts
  5. Replace the faulty mirror if necessary

Related codes

FAQ

What does the B1645 code mean?

B1645 is an OBD-II diagnostic trouble code that indicates: Mirror Passenger Right Circuit Short To Battery

What causes a B1645 error code?

The most common causes of B1645 include: Damage to the mirror wiring harness; Short circuit inside the mirror; Faulty relay or control unit; Contact corrosion.

How do I fix a B1645 diagnostic trouble code?

To fix B1645: Check the condition of the mirror circuit fuses. Inspect the wiring harness for damage. Check the mirror circuit resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1645?

Limited driving only, diagnose soon

How much does it cost to fix B1645?

The estimated repair cost for B1645 is $6–111. Actual cost depends on your vehicle, location, and labor rates.

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