P0420

2017-10-10

Description:

  • The fault code P0420 indicates that there is an issue with the catalyst system in bank 1, which could be causing the engine to perform poorly or not start at all.

Possible Symptoms:

  • Illuminated check engine light

  • Poor engine performance

  • Reduced power or acceleration

  • Higher emissions levels

Possible Causes:

  • Faulty catalytic converter

  • Oxygen sensor malfunction

  • Exhaust leaks

  • Fuel system problems

  • Ignition system problems

  • Engine mechanical problems

Related Parts:

  • Catalytic Converter: A catalytic converter is a device that converts toxic gases and pollutants to less harmful pollutants. Problems lead to harmful emissions out of limit, rotten egg smell from exhaust & reduced speed

Possible Solutions:

  • Replace the catalytic converter

  • Replace any faulty oxygen sensors

  • Repair any exhaust leaks

  • Check and repair any fuel system problems

  • Check and repair any ignition system problems

  • Check for any engine mechanical problems

Search