B0425
Audio Amplifier Internal Failure
The audio amplifier reports an internal self-test failure. Sound output may be distorted, missing on some channels, or the amplifier enters a protection mode.
The audio amplifier reports an internal self-test failure. Sound output may be distorted, missing on some channels, or the amplifier enters a protection mode.
Common causes
- high
Amplifier internal fault
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Power supply or ground fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1650
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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 B0425 mean?
B0425 means "Audio Amplifier Internal Failure". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B0425?
amplifier internal fault; power supply or ground fault — 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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