P2BA3
Starter/Generator Mechanical Performance
The hybrid control module detects that the integrated starter/generator does not deliver the expected mechanical torque or speed for the commanded operation. Belt slippage, bearing wear, or coupling fault.
The hybrid control module detects that the integrated starter/generator does not deliver the expected mechanical torque or speed for the commanded operation. Belt slippage, bearing wear, or coupling fault.
Common causes
- high
Drive belt slipping or worn
One of the most commonly reported causes for this code — check this first.
Typical part cost: $330-2750
- medium
Starter/generator bearing worn
A plausible cause — test and verify before replacing parts.
Typical part cost: $330-2750
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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 P2BA3 mean?
P2BA3 means "Starter/Generator Mechanical Performance". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2BA3?
drive belt slipping or worn; starter/generator bearing worn — 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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