Engine Turbocharger Wastegate Control Position Sensory Circuit
Indicates a problem with the wastegate control position sensing in the turbocharger system.
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What it means (plain English)
The computer is not getting correct data from the wastegate position sensor, which controls how much boost the turbo makes. This can lead to performance issues because the turbo may not work properly.
What the computer is actually seeing
The PCM expects to see a certain voltage range (typically between 0.5V and 4.5V) from the wastegate position sensor as it moves, indicating the wastegate's position. If the voltage stays too low (below 0.5V) or too high (above 4.5V) or is inconsistent, the code sets.
What a healthy reading looks like
Expected voltage from the wastegate position sensor should be between 0.5V (closed) to 4.5V (fully opened).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connectors for the wastegate position sensor for any damage or corrosion.
- 22. Measure the voltage at the wastegate position sensor. It should range from 0.5V to 4.5V when operating.
- 33. If the voltage is out of range, replace the wastegate position sensor and retest.
- 44. If the sensor voltage is correct, inspect the turbocharger actuator for proper operation and mechanical blockage.
- 55. If the actuator is functioning, check for software updates or recalibration issues with the ECM.
Common causes
- Faulty wastegate position sensor
- Wiring issues or connector corrosion
- Faulty turbocharger actuator
- Software calibration issues in the ECM
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive the vehicle with this code present?
Yes, but expect reduced power and turbo performance.
Will this problem come back after I clear the code?
It can come back if the underlying issue isn't fixed.
Why does this code sometimes pair with turbo boost issues?
Because the wastegate directly affects boost control, which controls overall engine power.
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