Control Module Throttle Actuator Range/Performance Problem
Throttle actuator is not responding correctly to input signals.
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What it means (plain English)
The throttle actuator controls how much air enters the engine. If it can't open or close like it should, the engine won't perform right.
What the computer is actually seeing
The engine control module (ECM) expects a certain range of voltage or position feedback from the throttle actuator. If the feedback varies too much from what is considered normal, it triggers this code.
What a healthy reading looks like
Voltage from the throttle position sensor should be between 0.5V (closed) and 4.5V (fully open).
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 throttle actuator wiring and connectors for corrosion or damage. Decision: If damaged, repair wiring/connectors and retest. If not, proceed to step 2.
- 22. Measure the voltage at the throttle position sensor with the engine on. It should read between 0.5V and 4.5V. Decision: If voltage is out of range, replace the throttle position sensor. If in range, proceed to step 3.
- 33. Use a scan tool to check for any other codes present. Decision: If other related codes show, address them first before coming back to this code. If none, proceed to step 4.
- 44. Check the throttle actuator itself for proper operation; it should move freely and respond to input signals. Decision: If it does not respond, replace the throttle actuator.
Common causes
- Faulty throttle actuator
- Wiring issues or corroded connectors
- Faulty throttle position sensor
- Poor battery voltage or grounding issues
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you should fix it soon; performance may be affected, but it typically won't cause immediate danger.
Will this issue come back after repair?
If you fix the underlying cause (like wiring), it shouldn't return.
Why does this code sometimes pair with other codes?
This often indicates multiple issues related to the throttle system, such as a sensor failure or wiring problem.
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