P003A
Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit
Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit: the control module has detected this fault condition. This affects turbo/supercharger boost-pressure control.
Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit: the control module has detected this fault condition. This affects turbo/supercharger boost-pressure control.
Common causes
- high
Wastegate actuator worn or sticking
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-2200
- medium
Linkage rod stretched or loose
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-2200
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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 P003A mean?
P003A means "Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.
What are the most common causes of P003A?
wastegate actuator worn or sticking; linkage rod stretched or loose — 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?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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