U02AF
Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor
The vehicle bus reports loss of communication with the turbocharger turbine inlet valve position sensor. Position feedback for variable inlet geometry on twin-scroll/sequential turbo systems is missing.
The vehicle bus reports loss of communication with the turbocharger turbine inlet valve position sensor. Position feedback for variable inlet geometry on twin-scroll/sequential turbo systems is missing.
Common causes
- high
Bus wiring open or shorted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-2200
- medium
Module without power or ground
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
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Frequently asked questions
What does U02AF mean?
U02AF means "Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U02AF?
bus wiring open or shorted; module without power or ground; module failed — 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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