P2108 — Throttle Actuator A Control Module Performance

P2108: Throttle Actuator A Control Module Performance — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Throttle Actuator A Control Module Performance. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • The engine warning may accompany poor throttle response or reduced power.
  • Some vehicles may have starting difficulties.

Possible causes

  • Throttle-control module performance may be affected by sensor input problems or damaged wiring.
  • A defective throttle actuator or, less commonly, a controller fault is possible.

What to check

  • Read other faults and visually inspect throttle, pedal and control-module connections.
  • Check electrical supply and grounds; compare pedal and throttle live signals.
  • Test the actuator circuit before deciding that the control unit needs replacement.

Also written as: P2108-00, P210800 (some scan tools add the fault-type byte, e.g. -00).