Turbocharger/Supercharger Wastegate Position Sensor
The wastegate position sensor is reporting an incorrect signal.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The sensor that tells the engine computer how far the wastegate is open or closed isn’t giving the right info, which affects boost pressure and engine performance.
What the computer is actually seeing
The Engine Control Module (ECM) expects a voltage reading from the wastegate position sensor that correlates to the actuator position. Typically, a signal around 0.5-4.5 volts is normal for a fully operational sensor under varying conditions.
What a healthy reading looks like
0.5-4.5 volts from the sensor, indicating the wastegate position accurately.
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 all wiring and connectors to the wastegate position sensor for damage or corrosion. Repair as needed, then retest the code.
- 22. Using a multimeter, measure the voltage at the wastegate sensor connector. Confirm voltage is between 0.5-4.5 volts with the engine running. If the value is out of range, replace the sensor.
- 33. Manually actuate the wastegate and observe the movement; it should not be stuck. If binding is present, check the actuator operation and replace if needed.
Common causes
- Faulty wastegate position sensor
- Wiring issues or connector problems
- Actuator binding or mechanical issues with the wastegate
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but performance will be affected, and you may notice a decrease in power.
Will this code come back after clearing?
If the underlying issue isn't fixed, it most likely will return.
Does this code affect fuel economy?
Yes, improper wastegate operation can cause engine inefficiency, leading to higher fuel consumption.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →