P0170

2017-10-10

Description:

  • The fault code P0170 indicates that there is an issue with the fuel trim system in bank 1 of the engine. This code is usually accompanied by another code that identifies the specific fuel system problem.

Possible Symptoms:

  • Illuminated check engine light

  • Poor fuel economy

  • Difficulty starting the engine

  • Rough idle or stalling

  • Reduced engine power or acceleration

Possible Causes:

  • Faulty oxygen sensor

  • Defective mass airflow (MAF) sensor

  • Clogged fuel injectors or fuel filter

  • Leaking or damaged vacuum lines

  • Malfunctioning fuel pressure regulator

  • Failed engine control module (ECM)

Related Parts:

  • Fuel Injection System: Fuel injection system controls the amount of fuel to be delivered through the fuel injectors. Problems lead to engine misfire, engine stalling

Possible Solutions:

  • Replace the faulty oxygen sensor

  • Check and replace the MAF sensor if necessary

  • Clean or replace clogged fuel injectors or fuel filter

  • Inspect and repair any leaking or damaged vacuum lines

  • Replace the fuel pressure regulator if necessary

  • Replace the engine control module (ECM) if no other issues are found

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