P0031 Atención pronto
HO2S Heater Control Circuit Low
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Descripción
This code means the oxygen sensor's heater circuit is receiving a signal that is too low. The engine's computer is not getting the expected voltage from the heater, which can prevent the sensor from working correctly.
Causas comunes
- Faulty oxygen sensor
- Wiring issue to the oxygen sensor
- Low voltage to the oxygen sensor heater circuit
- Blown fuse for the oxygen sensor heater
Síntomas
- Check Engine light is on
- Increased fuel consumption
- Failed emissions test