B0990
Body Control Module Internal Fault
The body control module (BCM) has detected an internal fault and may need to be replaced.
The body control module (BCM) has detected an internal fault and may need to be replaced.
Common causes
- high
BCM internal hardware fault
One of the most commonly reported causes for this code — check this first.
Typical part cost: $330-1650
- medium
Voltage spike damage from jump-start
A plausible cause — test and verify before replacing parts.
Typical part cost: $330-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does B0990 mean?
B0990 means "Body Control Module Internal Fault". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B0990?
bcm internal hardware fault; voltage spike damage from jump-start; water intrusion at module — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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