P0043 Atención pronto
HO2S Heater Control Circuit Low
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Descripción
This code indicates that the heating circuit for an oxygen sensor is not receiving enough voltage. This prevents the sensor from reaching its optimal operating temperature, affecting its ability to report exhaust gas conditions accurately.
Causas comunes
- Faulty oxygen sensor
- Wiring issue to the oxygen sensor (short to ground)
- Low voltage supply to the oxygen sensor heater
- Problem with the engine control module (ECM)
Síntomas
- Check Engine light is on
- Poor fuel economy
- Rough idling