P0428

2017-10-10

Description:

  • The fault code P0428 indicates that there is a problem with the circuit that controls the temperature sensor for the catalytic converter on bank 1. This may cause issues with emissions and engine performance.

Possible Symptoms:

  • Illuminated check engine light

  • Failed emissions test

  • Decreased engine performance

  • Rough idle or stalling

Possible Causes:

  • Malfunctioning catalytic converter

  • Damaged wiring or connections in the circuit

  • Corroded or loose electrical connections

  • Failed temperature sensor

  • Failed engine control module (ECM)

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

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the temperature sensor

  • Replace the engine control module (ECM) if necessary

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