OBD Guide
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P02A8

Cylinder 4 - Injector Restricted

P02A8 is an OBD-II diagnostic trouble code meaning: Cylinder 4 - Injector Restricted. Common causes: nozzle contamination, nozzle wear. Estimated repair cost: $56–167.

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

Symptoms

  • Uneven engine operation
  • Power reduction
  • Increased fuel consumption
  • Misfire in cylinder 4

Causes

  • Nozzle contamination
  • Nozzle wear
  • Problems in the injector control circuit
  • ECU malfunction

How to Fix

  1. Check the injector electrical circuit
  2. Clean or replace the injector
  3. Check the operation of the computer

Related codes

P0304P0204P0171

Error P02A8 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P02A8 code mean?

P02A8 is an OBD-II diagnostic trouble code that indicates: Cylinder 4 - Injector Restricted

What causes a P02A8 error code?

The most common causes of P02A8 include: Nozzle contamination; Nozzle wear; Problems in the injector control circuit; ECU malfunction.

How do I fix a P02A8 diagnostic trouble code?

To fix P02A8: Check the injector electrical circuit. Clean or replace the injector. Check the operation of the computer. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P02A8?

Limited driving only, diagnose soon

How much does it cost to fix P02A8?

The estimated repair cost for P02A8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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