OBD Guide
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P0443

EVAP System Purge Control Valve A Circuit

P0443 is an OBD-II diagnostic trouble code meaning: EVAP System Purge Control Valve A Circuit. Common causes: open or short circuit in the purge valve wiring harness, purge solenoid valve malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Smell of gasoline in the cabin

Causes

  • Open or short circuit in the purge valve wiring harness
  • Purge solenoid valve malfunction
  • Problems with the engine control unit (ECU)
  • Corrosion of contacts or connectors

How to Fix

  1. Check the wiring harness and purge valve connectors for damage.
  2. Check the resistance of the purge valve (should be within 20-30 Ohms)
  3. Check the power supply to the valve when the ignition is turned on
  4. Replace the purge valve if a fault is detected
  5. Clean or replace connectors if there is corrosion.

Related codes

P0440P0442P0449

Error P0443 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0443 code mean?

P0443 is an OBD-II diagnostic trouble code that indicates: EVAP System Purge Control Valve A Circuit

What causes a P0443 error code?

The most common causes of P0443 include: Open or short circuit in the purge valve wiring harness; Purge solenoid valve malfunction; Problems with the engine control unit (ECU); Corrosion of contacts or connectors.

How do I fix a P0443 diagnostic trouble code?

To fix P0443: Check the wiring harness and purge valve connectors for damage.. Check the resistance of the purge valve (should be within 20-30 Ohms). Check the power supply to the valve when the ignition is turned on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0443?

Limited driving only, diagnose soon

How much does it cost to fix P0443?

The estimated repair cost for P0443 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat