P019D Atención pronto
O2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 3
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Descripción
This code means the oxygen sensor on Bank 2 Sensor 3 is slow to react when the fuel mixture shifts from lean to rich. The engine's computer needs accurate and timely readings to maintain proper operation.
Causas comunes
- Faulty oxygen sensor (Sensor 3 on Bank 2)
- Contaminated oxygen sensor
- Exhaust leak on Bank 2
- Vacuum leak
- Wiring issues to the sensor
Síntomas
- Check Engine light is on
- Reduced engine performance
- Higher fuel consumption
- Failed emissions inspection