P2111: Throttle Actuator Control System - Stuck Open
Severity: high
What it means: The engine computer sees the electronic throttle plate open further than commanded, or not closing when it should.
Safe to drive? Not recommended. The engine usually goes into a reduced-power mode, and throttle response may be unpredictable.
Common symptoms
- Check-engine or wrench light
- Reduced power or limp mode
- High or surging idle
- Often set with P2112
Likely causes, ranked
- Dirty or sticking electronic throttle bodyDIY
- Failed throttle body motor or position sensorDIY
- Wiring or connector faultShop
- Engine computer software (some vehicles)Shop
Vehicle-specific notes
- 2016–2016 Ford Explorer: Ford program 16B32 says throttle body contamination can light the check-engine light, set P2111 and P2112 and put the vehicle in a reduced-power mode. Dealers replaced the throttle body or reprogrammed the PCM. The program expired September 30, 2017. Read the full answer · Source
- 2015–2016 Ford F-150: Ford program 16B32 also covered certain 2015–2016 F-150s for the same throttle body contamination and P2111/P2112 reduced-power condition. The program expired September 30, 2017. Read the full answer · Source
What it means: The engine computer sees the electronic throttle plate open further than commanded, or not closing when it should.
Severity: High. Safe to drive? Not recommended. The engine usually goes into a reduced-power mode, and throttle response may be unpredictable.
DIY or shop?
Cleaning or swapping a throttle body is often DIY. Check for bulletins and programs first, since some fixes are a software update.
Before you replace parts
- Read all stored codes and freeze-frame data. Fix misfire, fuel or sensor codes before chasing emissions codes.
- Check the simple things first: connectors, vacuum hoses, fluid levels and the gas cap.
- Clear the code only after a repair, then confirm it stays off after a few drives.
- Check your VIN for recalls and service bulletins.
Safety / mechanic note
Verify with a mechanic. Throttle faults can cut power suddenly in traffic. A code points to a circuit or system, not always a specific part.