P01F1 Atención pronto
O2 Sensor Circuit Bank 1 Sensor 4
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Descripción
This code indicates a general problem with the oxygen sensor circuit for Bank 1, Sensor 4. This sensor measures the amount of oxygen in the exhaust to help the engine run efficiently.
Causas comunes
- Faulty oxygen sensor (Sensor 4)
- Wiring issue to the oxygen sensor
- Exhaust leak before the sensor
- Problem with the sensor's heating element
- Contaminated oxygen sensor
Síntomas
- Reduced fuel efficiency
- Increased emissions
- Check Engine Light illuminated
- Rough engine idle