P2112 on Toyota
Throttle Actuator Control System - Stuck Closed
P2112 on Toyota vehicles indicates throttle actuator control system - stuck closed. Au7o has documented this code across 1 Toyota model — most commonly on Corolla. P2112 means the throttle actuator control (electronic throttle) system is stuck in the closed position. On drive-by-wire engines the computer moves the throttle plate with an electric motor and confirms its position with sensors; when it commands the throttle open but the plate won't move past closed, this code sets. This usually triggers limp/failsafe mode with greatly reduced power, a poor or surging idle, or a no-acceleration condition. It points to a mechanical or electrical problem in the throttle body or its control circuit.
Common Causes of P2112
- •Carbon buildup or debris binding the throttle plate
- •Failed throttle body actuator motor
- •Faulty throttle position sensor inside the throttle body
- •Damaged or corroded throttle body connector/wiring
- •Loss of power or ground to the throttle body
- •Seized or mechanically stuck throttle plate
- •Faulty throttle control circuit in the PCM/ECM
P2112 on Toyota by Model
Toyota Corolla(1 issue)
- Low-Speed Unintended Surging Complaints (ETCS-i)2006-2010
Owners of 2006-2010 Corollas equipped with the electronic throttle control system (ETCS-i) reported episodes of low-speed surging — the car lunging or accelerating slightly on its own at low speed (e.g., in parking lots or creeping traffic) such that braking sometimes felt insufficient to stop in time. NHTSA received a petition and opened scrutiny covering roughly 1.69 million 2006-2010 Corollas with electronic throttle control, separate from (and in addition to) the well-known floor-mat-entrapment and sticky-accelerator-pedal recalls of the same era. While Toyota and NHTSA's technical reviews did not confirm an electronic root cause, the surging complaints are numerous, well-documented, and a frequent owner search.
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View P2112 across all makes →Frequently Asked Questions
What does P2112 mean on Toyota?▼
P2112 stands for "Throttle Actuator Control System - Stuck Closed." P2112 means the throttle actuator control (electronic throttle) system is stuck in the closed position. On drive-by-wire engines the computer moves the throttle plate with an electric motor and confirms its position with sensors; when it commands the throttle open but the plate won't move past closed, this code sets. This usually triggers limp/failsafe mode with greatly reduced power, a poor or surging idle, or a no-acceleration condition. It points to a mechanical or electrical problem in the throttle body or its control circuit. On Toyota specifically, this code is documented across 1 model.
What causes P2112 on Toyota vehicles?▼
Common causes on Toyota: Carbon buildup or debris binding the throttle plate, Failed throttle body actuator motor, Faulty throttle position sensor inside the throttle body, Damaged or corroded throttle body connector/wiring, Loss of power or ground to the throttle body. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2112 on a Toyota?▼
Repair costs vary widely depending on the root cause and specific Toyota model.
Which Toyota models have P2112 documented?▼
Au7o has documented P2112 on 1 Toyota model: Corolla.