OBD Guide

P2102

Throttle Actuator A Control Motor Circuit Low

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • The car goes into emergency mode
  • Unstable engine idling
  • Acceleration problems

Causes

  • Throttle motor malfunction
  • Open or short circuit in control circuit
  • Poor contact in connectors
  • Engine control unit (ECU) malfunction
  • Mechanical damage to the throttle valve

How to Fix

  1. Check the integrity of wiring and connectors
  2. Test the throttle motor resistance
  3. Check voltage at throttle valve connectors
  4. Clean the throttle valve (if dirty)
  5. Replace throttle body assembly if necessary

Related codes

Error P2102 by Vehicle Brand