OBD Guide
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P0488

EGR Throttle Control Circuit A Range/Performance

P0488 is an OBD-II diagnostic trouble code meaning: EGR Throttle Control Circuit A Range/Performance. Common causes: open or short circuit in wiring harness, malfunction of the electromagnetic valve (solenoid) egr. Estimated repair cost: $56–167.

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

Symptoms

  • Increased fuel consumption
  • Unstable idle
  • Reduced engine power
  • Check Engine Light Illuminates
  • Increased emissions of harmful substances

Causes

  • Open or short circuit in wiring harness
  • Malfunction of the electromagnetic valve (solenoid) EGR
  • Mechanical sticking of the EGR throttle valve
  • Contamination or carbon deposits on the EGR valve
  • EGR damper position sensor malfunction
  • Software error in the ECU

How to Fix

  1. Check wiring harness and connectors for damage
  2. Check EGR solenoid resistance and power supply
  3. Clean or replace EGR throttle body
  4. Check EGR flap position sensor
  5. Update ECU firmware
  6. Replace EGR control unit if necessary

Related codes

P0401P0402P0403P0404

Error P0488 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0488 code mean?

P0488 is an OBD-II diagnostic trouble code that indicates: EGR Throttle Control Circuit A Range/Performance

What causes a P0488 error code?

The most common causes of P0488 include: Open or short circuit in wiring harness; Malfunction of the electromagnetic valve (solenoid) EGR; Mechanical sticking of the EGR throttle valve; Contamination or carbon deposits on the EGR valve.

How do I fix a P0488 diagnostic trouble code?

To fix P0488: Check wiring harness and connectors for damage. Check EGR solenoid resistance and power supply. Clean or replace EGR throttle body. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0488?

Limited driving only, diagnose soon

How much does it cost to fix P0488?

The estimated repair cost for P0488 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat