Elmagnoon

Sorry for the late reply, error codes p0172 and p0175. Also a quick update: got the spark plugs replaced as part of the 60K service but that didn't fix the problem. Left the car for 3 weeks at the shop. They did additional diagnostics, sending data back and forth to the factory. The factory came back that it's "probably" the cats that are throwing the codes. The dealership wants to charge me $6000 to replace the cats + labor, which is unbelievable. Questions: 1. Is it possible bad cats will cause the issue? 2. Anyone aware of the Toyota replacement part for this? It will definit

Hi everyone. I've been battling a check engine light for a few months now and the dealership doesn't seem to get the grasp of it. My car is running rich. Replaced the mass airflow sensor, air filter, a leaking fuel injector, many ECU resets and a vacuum leak but the problem always comes back. My car has around 58K KM still on the factory spark plugs. Fuel economy is terrible in the city, slightly rough idle and a considerable loss of power on lower rpm. It stalled on me quite a few times on hard braking down to a stop. Any feedback is highly appreciated.