P0042 Atención pronto
HO2S Heater Control Circuit
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Descripción
This code means there's a problem with the heating element in one of your oxygen sensors. The oxygen sensor needs to be hot to accurately measure exhaust gases and help your engine run efficiently.
Causas comunes
- Faulty oxygen sensor
- Wiring issue to the oxygen sensor
- Blown fuse for the oxygen sensor heater
- Problem with the engine control module (ECM)
Síntomas
- Check Engine light is on
- Reduced fuel economy
- Increased emissions