¿Cuáles son las causas del código P019A?

Faulty oxygen sensor (Sensor 3). Vacuum leak in the exhaust system. Exhaust leak before the oxygen sensor. Contaminated oxygen sensor. Problem with the engine control module (ECM)

¿Qué síntomas produce el código P019A?

Check Engine light is on. Reduced fuel economy. Rough idling. Failed emissions test

P019A — O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 3

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Descripción

This code means that the oxygen sensor in your exhaust system, specifically on Bank 1 Sensor 3, is not switching between rich and lean fuel mixtures as quickly as the computer expects. This can affect how efficiently your engine burns fuel.

Causas comunes

Faulty oxygen sensor (Sensor 3)
Vacuum leak in the exhaust system
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
Failed emissions test