Turbocharger Wastegate Position Sensor Fault
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 computer how far open or closed the turbo's wastegate is not working right. It should be sending a voltage signal that matches the wastegate's actual position.
What the computer is actually seeing
When the engine is running, the sensor should send a signal between 0.5 to 4.5 volts depending on the position of the wastegate. A stuck signal or an out-of-range reading may trigger this code.
What a healthy reading looks like
Voltage should be between 0.5V (fully closed) and 4.5V (fully open) while the engine is running.
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.
- 1Check the wiring and connector at the wastegate position sensor for damage or corrosion. Is the wiring intact?
- 2Measure the voltage at the wastegate position sensor while moving the actuator manually. Does the voltage change smoothly from 0.5V to 4.5V?
- 3Inspect the mechanical operation of the wastegate. Can it move freely without obstruction?
- 4If the wiring is good and the sensor is not reporting correctly, replace the wastegate position sensor. If it still fails, consider checking the ECM.
Common causes
- Faulty wastegate position sensor
- Wiring issues such as shorts or opens in the connector
- Mechanical binding in the wastegate actuator
- Faulty engine control module (ECM)
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It may be drivable, but engine performance will be reduced, and you could experience loss of power or increased emissions.
Will this problem fix itself over time?
No, if the sensor is faulty or there's a wiring issue, it won't resolve on its own and should be diagnosed.
Why does it pair with other codes?
Codes can be interrelated; issues with the wastegate can trigger multiple sensor faults.
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 →