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Engine-Codes – Generic – B0770:06

B0770:06 Code - All Wheel Drive Indicator Circuit Short to Ground or Open

Quick Answer

The B0770:06 diagnostic trouble code (DTC) relates to the All Wheel Drive (AWD) Indicator Circuit being shorted to ground or open in a vehicle. Common causes include Damaged wiring harness affecting the AWD indicator circuit, Faulty AWD indicator switch, Malfunctioning AWD control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B0770:06 indicates All Wheel Drive Indicator Circuit Short to Ground or Open.
Common causes
Common causes include Damaged wiring harness affecting the AWD indicator circuit, Faulty AWD indicator switch, Malfunctioning AWD control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B0770:06 Description

The B0770:06 diagnostic trouble code (DTC) relates to the All Wheel Drive (AWD) Indicator Circuit being shorted to ground or open in a vehicle. This code indicates that there is an issue with the AWD system's indicator circuit, which is responsible for informing the driver about the status of the AWD system. The AWD system is designed to distribute power to all four wheels of the vehicle, improving traction and stability in various driving conditions. When the indicator circuit malfunctions, it can lead to a lack of communication between the AWD system and the vehicle's onboard computer, resulting in potential performance issues.

OBDII Code B0770:06 - All Wheel Drive Indicator Circuit Short to Ground or Open
B0770:06 Code - All Wheel Drive Indicator Circuit Short to Ground or Open

Common Causes of B0770:06

  1. Damaged wiring harness affecting the AWD indicator circuit.
  2. Faulty AWD indicator switch.
  3. Malfunctioning AWD control module.
  4. Loose or corroded connections within the AWD system.
  5. Physical damage to the AWD system components due to external factors.

Symptoms of B0770:06

  1. AWD indicator light on the dashboard not working or flickering.
  2. Inconsistent engagement or disengagement of the AWD system.
  3. Unusual noises or vibrations from the AWD components.
  4. Vehicle experiencing difficulty in maintaining traction on slippery surfaces.
  5. Warning messages related to the AWD system displayed on the instrument cluster.

How to Fix B0770:06

  1. Begin by conducting a thorough visual inspection of the AWD indicator circuit wiring and connections to identify any visible damage or loose connections.
  2. Use a multimeter to test the continuity and resistance of the wiring harness and AWD indicator switch to pinpoint the source of the short to ground or open circuit.
  3. Replace any damaged wiring harness, faulty AWD indicator switch, or malfunctioning AWD control module as needed.
  4. Clear the DTC from the vehicle's onboard computer using a diagnostic scan tool and verify that the AWD indicator light functions correctly.
  5. Perform a road test to ensure proper engagement and disengagement of the AWD system, addressing any remaining issues if necessary.

Cost to Fix B0770:06

The typical repair costs for addressing a B0770:06 code can vary depending on the specific cause of the issue and the labor rates at auto repair shops. In general, the parts required for this repair, such as a new wiring harness, AWD indicator switch, or control module, can range from $100 to $500. The labor costs for diagnosing and resolving the problem can add an additional $200 to $500 to the total repair bill.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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