P28C8
Clutch A Pump Motor Performance
The clutch A hydraulic pump motor does not produce the expected flow for the commanded speed. Worn pump, leakage, or aged motor characteristic.
The clutch A hydraulic pump motor does not produce the expected flow for the commanded speed. Worn pump, leakage, or aged motor characteristic.
Common causes
- high
Hydraulic pump worn
One of the most commonly reported causes for this code — check this first.
Typical part cost: $550-2750
- medium
Motor characteristic aged
A plausible cause — test and verify before replacing parts.
Typical part cost: $550-2750
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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
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Frequently asked questions
What does P28C8 mean?
P28C8 means "Clutch A Pump Motor 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 P28C8?
hydraulic pump worn; motor characteristic aged — 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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