P0142


2017-10-10


Description:

  • The fault code P0142 indicates that there is a problem with the O2 sensor circuit for bank 1, sensor 3. This may lead to issues with fuel efficiency and emissions control.

Possible Symptoms:

  • Poor fuel efficiency

  • Increased emissions

  • Illuminated check engine light

  • Rough idle or stalling

  • Loss of power or acceleration

Possible Causes:

  • Failed O2 sensor

  • Damaged or corroded wiring or connections in the circuit

  • Loose or damaged electrical connections

  • Failed engine control module (ECM)

Related Parts:

  • Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy

Possible Solutions:

  • Replace the O2 sensor

  • Check and repair any damaged wiring or connections

  • Tighten or replace any loose or damaged electrical connections

  • Replace the engine control module (ECM) if necessary

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