OBD Guide

B0770

All Wheel Drive Indicator Circuit

Severity
Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–167 (est.)

Symptoms

  • The all-wheel drive indicator does not light up when the ignition is turned on.
  • The all-wheel drive indicator is constantly on, even when the system is turned off.
  • Flashing 4WD indicator
  • Lack of indicator response to switching drive modes

Causes

  • Burnt out indicator lamp
  • Open or short circuit in wiring harness
  • Instrument cluster malfunction
  • Problems with the four-wheel drive control module
  • Poor contact in connectors
  • Software error in the module

How to Fix

  1. Check the condition of the AWD indicator lamp
  2. Diagnose the wiring harness for breaks and short circuits
  3. Check connector connections for corrosion and damage
  4. Read fault codes in the all-wheel drive module
  5. If necessary, replace the instrument cluster or control module

Related codes

Error B0770 by Vehicle Brand