P042D

2017-10-10

Description:

  • Temperature sensor for oxygen sensors to reduce emission in the exhaust pipe not working

Possible Symptoms:

  • Lack of power

  • A/C Inoperative

Possible Causes:

  • Damaged muffler or leaks in the muffler

  • Damaged exhaust manifold or leaks in the exhaust manifold

  • Damaged exhaust pipe or exhaust pipe leaks

  • A misfire in the engine

  • Oil contamination in catalytic converter

  • Faulty Catalytic Converter

  • Faulty Engine Coolant Temperature Sensor

  • Faulty front and rear oxygen sensor

  • Damaged oxygen sensor wiring

  • Oxygen sensor wiring that is not properly connected

  • Damaged oxygen sensor connectors

  • Fuel injector that is leaking

  • Fuel pressure that is high

  • Use of the wrong kind of fuel (using leaded fuel instead of unleaded fuel)

Related Parts:

  • Catalyst Temperature Sensor: A catalyst is a chemical substance that takes the exhaust gas stream from the engine and converts toxic gases and pollutants to less harmful pollutants. The function of the catalyst temperature sensor is to warn the car computer if temperature of the catalyst goes above the safe limit. Problems lead to harmful emissions out of limit

Possible Solutions:

  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.

  • Inspect the EVAP (Evaporative Emission Control System) system for cuts/holes in tubes/hoses

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