The throttle position signal does not match what the computer expects. The driver may notice hesitation, unstable idle or limited power.
Causes vary by car. Test before you order a part.
Likely causes, most common first
- Worn throttle position sensor
- Dirty throttle body
- Wiring or connector fault
- Faulty throttle body assembly
Parts usually involved
- Throttle position sensor Find at suppliers
- Throttle body Find at suppliers
- Sensor connector Find at suppliers
Test before you replace
Watch the position signal for smooth change while moving the throttle and inspect the throttle body.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.