P01F4 Atención pronto
O2 Sensor Circuit Slow Response Bank 1 Sensor 4
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Descripción
This code means that the oxygen sensor in your exhaust system, specifically Bank 1 Sensor 4, is not responding quickly enough to changes in the exhaust gases. This sensor helps your car's computer determine how much fuel to inject for optimal performance and emissions.
Causas comunes
- Faulty oxygen sensor (Bank 1 Sensor 4)
- Wiring issue to the oxygen sensor
- Exhaust leak before the oxygen sensor
- Contaminated oxygen sensor
- Problem with the engine control module (ECM)
Síntomas
- Check Engine light is on
- Reduced fuel economy
- Rough idling or engine performance issues
- Failed emissions test