P019C Atención pronto
O2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 3
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Descripción
This code points to a slow response from the oxygen sensor on Bank 2 Sensor 3 as it tries to switch from a rich to a lean fuel mixture. The engine's computer is detecting a delay in this critical measurement.
Causas comunes
- Faulty oxygen sensor (Sensor 3 on Bank 2)
- Exhaust leak on Bank 2
- Vacuum leak
- Contaminated oxygen sensor
- Wiring problems to the sensor
Síntomas
- Check Engine light illuminated
- Poor fuel economy
- Engine misfires
- Increased emissions