Turbocharger Wastegate Actuator Position Too High
The turbocharger wastegate actuator position is reading outside of the expected range.
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What it means (plain English)
The computer thinks the wastegate is stuck open too much, which could mean less boost and reduced engine power.
What the computer is actually seeing
The ECM is comparing the actual position of the wastegate actuator to its expected position based on engine load and RPM.
What a healthy reading looks like
Expected actuator position is typically between 0-100% depending on engine demand; higher than 100% indicates a fault.
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 connector to the wastegate actuator for corrosion or damage. If okay, go to step 2.
- 22. Measure the voltage at the wastegate actuator connector while the engine is running. It should be within the range of 0.5V to 4.5V depending on the control signal when loaded. If out of range, repair the circuit as necessary and retest.
- 33. If voltage is correct, manually test the wastegate actuator movement by applying vacuum/pressure (as applicable) to the actuator. It should move smoothly and hold position. If it doesn't, replace the actuator and retest.
- 44. Inspect the turbocharger for proper function, confirming that the wastegate is not physically stuck or damaged. Repair/replace as needed. If no issues are found, consider ECM updates or programming.
Common causes
- Wiring issues in the wastegate actuator circuit
- Faulty wastegate actuator
- Turbocharger malfunction
- Exhaust leaks affecting turbo operation
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's drivable, but you may notice a loss of power and reduced fuel efficiency. Repair soon.
Will this problem come back after repair?
If all issues are properly addressed, it shouldn't return. Ensure all connections are solid.
Why does this code show up with low boost conditions?
The system is designed to monitor the wastegate position; if the wastegate is open too much, it won't build enough boost, triggering this code.
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