P2112: Throttle Actuator Control System - Stuck Closed
Severity: high
What it means: The engine computer sees the electronic throttle plate staying more closed than commanded.
Safe to drive? Not recommended. Expect reduced power or limp mode, and the engine may stall or hesitate.
Common symptoms
- Check-engine or wrench light
- Reduced power or limp mode
- Stalling or hesitation
- Often set with P2111
Likely causes, ranked
- Carbon buildup on the throttle bodyDIY
- Failed throttle body motor or position sensorDIY
- Wiring or connector faultShop
- Engine computer software (some vehicles)Shop
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Vehicle-specific notes
- 2016–2016 Ford Explorer: Ford program 16B32: throttle body contamination can set P2111 and P2112 with 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 P2111/P2112 throttle body condition. The program expired September 30, 2017. Read the full answer · Source
What it means: The engine computer sees the electronic throttle plate staying more closed than commanded.
Severity: High. Safe to drive? Not recommended. Expect reduced power or limp mode, and the engine may stall or hesitate.
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.
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