P2112 — Throttle Actuator A Control System - Stuck Closed

P2112: Throttle Actuator A Control System - Stuck Closed — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Throttle Actuator A Control System - Stuck Closed. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • The vehicle may not respond normally to acceleration, or the engine may remain near idle.
  • A warning lamp and restricted power may be present.

Possible causes

  • The throttle plate may remain closed due to deposits or mechanical binding.
  • A faulty actuator motor, damaged wiring or position-sensor feedback can prevent normal opening.

What to check

  • Read associated faults and inspect the throttle body with the engine off for obstruction.
  • Check throttle-actuator connections and electrical supply.
  • Compare commanded and actual throttle positions before replacing parts.

Also written as: P2112-00, P211200 (some scan tools add the fault-type byte, e.g. -00).