OBD Guide

P2100

Throttle Actuator A Control Motor Circuit/Open

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Unstable idle speed
  • Gas pedal does not respond properly
  • The car goes into emergency mode

Causes

  • Open or short circuit in wiring harness
  • Throttle motor malfunction
  • Poor contact in connectors
  • Damage to the engine control unit
  • Mechanical fault of the throttle valve

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Measure the resistance of the control circuit
  3. Check the operation of the drive motor
  4. Diagnose the control unit
  5. If necessary, replace the throttle assembly

Related codes

Error P2100 by Vehicle Brand