OBD Guide
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U0408

Invalid Data Received From Throttle Actuator A Control Module

U0408 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Throttle Actuator A Control Module. Common causes: damage to the wiring harness to the throttle module, throttle control module malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable engine idling
  • Acceleration problems
  • Reduced engine power
  • The car may go into emergency mode

Causes

  • Damage to the wiring harness to the throttle module
  • Throttle control module malfunction
  • Module power problems
  • Contact corrosion
  • Engine ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness to the throttle module
  2. Check connections and contacts for corrosion
  3. Check the power supply to the control module
  4. Scan the system for other errors
  5. If necessary, replace the throttle control module

Related codes

U0401U0402U0403

Error U0408 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U0408 code mean?

U0408 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Throttle Actuator A Control Module

What causes a U0408 error code?

The most common causes of U0408 include: Damage to the wiring harness to the throttle module; Throttle control module malfunction; Module power problems; Contact corrosion.

How do I fix a U0408 diagnostic trouble code?

To fix U0408: Check the integrity of the wiring harness to the throttle module. Check connections and contacts for corrosion. Check the power supply to the control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U0408?

Do not drive — repair immediately

How much does it cost to fix U0408?

The estimated repair cost for U0408 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat