P019B Atención pronto
O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 3
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Descripción
This code indicates that the oxygen sensor on Bank 1 Sensor 3 is slow to respond when the engine's fuel mixture changes from lean to rich. This sluggishness can lead to the engine not running at its optimal fuel efficiency.
Causas comunes
- Faulty oxygen sensor (Sensor 3)
- Contaminated oxygen sensor
- Exhaust leak before the oxygen sensor
- Vacuum leak in the exhaust system
- Wiring issue to the oxygen sensor
Síntomas
- Check Engine light is on
- Decreased gas mileage
- Engine performance issues
- Emissions test failure