B0978 Code - Accessory Indicator Control Circuit
Quick Answer
The B0978 diagnostic trouble code (DTC) refers to the Accessory Indicator Control Circuit. Common causes include Damaged wiring or connectors in the accessory indicator control circuit, Faulty accessory indicator control module, Malfunctioning accessory indicator. 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
- B0978 indicates Accessory Indicator Control Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the accessory indicator control circuit, Faulty accessory indicator control module, Malfunctioning accessory indicator.
- 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.
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Code B0978 Description
The B0978 diagnostic trouble code (DTC) refers to the Accessory Indicator Control Circuit. This code indicates that there is a malfunction in the circuit that controls the accessory indicator on the vehicle. The accessory indicator is responsible for notifying the driver when certain accessories or features are active or inactive, such as headlights, turn signals, or seatbelt indicators. When this circuit malfunctions, it can lead to issues with the vehicle's overall electrical system and potentially impact the proper functioning of various accessories.
Common Causes of B0978
- Damaged wiring or connectors in the accessory indicator control circuit.
- Faulty accessory indicator control module.
- Malfunctioning accessory indicator.
- Corrosion or loose connections in the circuit.
- Electrical issues within the vehicle's system.
Symptoms of B0978
- Inaccurate or non-functional accessory indicators on the dashboard.
- Failure of certain accessories to activate or deactivate as indicated.
- Flickering or intermittent behavior of accessory indicator lights.
- Illumination of the check engine light on the dashboard.
How to Fix B0978
- Use a diagnostic scanner to retrieve the B0978 code and verify the issue.
- Inspect the wiring and connectors in the accessory indicator control circuit for damage or corrosion.
- Test the accessory indicator control module for proper functionality and replace if necessary.
- Verify the operation of the accessory indicator itself and replace if defective.
- Clear the DTC and test the system to ensure proper operation of the accessory indicator.
Cost to Fix B0978
The cost of repairing the B0978 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this type of electrical issue can range from $100 to $300, including parts and labor. However, it's essential to consider that rates may differ based on location, vehicle make and model, and the complexity of the repair. It's recommended to consult with a professional technician for a more accurate estimate based on the specific circumstances.
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Code B0978 Information for Specific Makes
- B0978 Buick — Accessory Indicator Control Circuit
- B0978 Cadillac — Accessory Indicator Control Circuit
- B0978 Chevrolet — Accessory Indicator Control Circuit
- B0978 GMC — Accessory Indicator Control Circuit
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