P0263

2017-10-10

Description:

  • The fault code P0263 indicates that there is a contribution/balance fault in cylinder number 1. This may cause the engine to perform poorly, misfire, run rough, or not start at all.

Possible Symptoms:

  • Engine performs poorly or misfires

  • Rough idling or stalling

  • Reduced engine power or acceleration

  • Illuminated check engine light

Possible Causes:

  • Malfunctioning fuel injector in cylinder number 1

  • Clogged fuel injector in cylinder number 1

  • Low fuel pressure or delivery problems

  • Faulty wiring or connections in fuel injector circuit

  • Failed engine control module (ECM)

Related Parts:

  • Fuel Injector:

Possible Solutions:

  • Replace the fuel injector in cylinder number 1

  • Clean or unclog the fuel injector in cylinder number 1

  • Check and repair any damaged wiring or connections in the fuel injector circuit

  • Check and repair any low fuel pressure or delivery problems

  • Replace the engine control module (ECM) if necessary

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