OBD Guide
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P2104

Throttle Actuator Control System - Forced Idle

P2104 is an OBD-II diagnostic trouble code meaning: Throttle Actuator Control System - Forced Idle. Common causes: throttle motor malfunction, problems with throttle body wiring or connectors. Estimated repair cost: $33–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Reduced engine power
  • Engine speed limit
  • Check Engine Light Is On
  • The car goes into emergency mode
  • Acceleration problems

Causes

  • Throttle motor malfunction
  • Problems with throttle body wiring or connectors
  • Throttle Position Sensor Malfunction
  • Software error in the engine control unit
  • Mechanical damage to the throttle assembly

How to Fix

  1. Check the condition of the throttle valve and its mechanical components
  2. Diagnose the throttle motor
  3. Check the integrity of wiring and connectors
  4. Test throttle position sensors
  5. If necessary, reflash or replace the control unit

Related codes

P2101P2105P2106

Error P2104 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P2104 code mean?

P2104 is an OBD-II diagnostic trouble code that indicates: Throttle Actuator Control System - Forced Idle

What causes a P2104 error code?

The most common causes of P2104 include: Throttle motor malfunction; Problems with throttle body wiring or connectors; Throttle Position Sensor Malfunction; Software error in the engine control unit.

How do I fix a P2104 diagnostic trouble code?

To fix P2104: Check the condition of the throttle valve and its mechanical components. Diagnose the throttle motor. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2104?

Limited driving only, diagnose soon

How much does it cost to fix P2104?

The estimated repair cost for P2104 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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