OBD Guide

B1776

Mirror Driver Up Circuit Short To Ground

B1776 is an OBD-II diagnostic trouble code meaning: Mirror Driver Up Circuit Short To Ground. Common causes: damage to the mirror wiring harness, signal wire short circuit to ground. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Upward mirror adjustment does not work
  • Mirror adjustment is jerky
  • The mirror only moves in one direction

Causes

  • Damage to the mirror wiring harness
  • Signal wire short circuit to ground
  • Mirror motor malfunction
  • Oxidation of mirror connector contacts
  • Problems with the mirror control unit

How to Fix

  1. Check the mirror wiring harness for damage.
  2. Test the control circuit for short circuit using a multimeter
  3. Check the mirror motor
  4. Clean the mirror connector contacts
  5. Replace damaged components if necessary

Related codes

FAQ

What does the B1776 code mean?

B1776 is an OBD-II diagnostic trouble code that indicates: Mirror Driver Up Circuit Short To Ground

What causes a B1776 error code?

The most common causes of B1776 include: Damage to the mirror wiring harness; Signal wire short circuit to ground; Mirror motor malfunction; Oxidation of mirror connector contacts.

How do I fix a B1776 diagnostic trouble code?

To fix B1776: Check the mirror wiring harness for damage.. Test the control circuit for short circuit using a multimeter. Check the mirror motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1776?

Limited driving only, diagnose soon

How much does it cost to fix B1776?

The estimated repair cost for B1776 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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