Hey guys, So I bought this Mazda and it was blowing a code for bank 2 sensor 1 I ended up replacing the O2 sensor up by the radiator. The car seemed fine for a couple days and has been blowing another P code. P0431 warm up catalyst efficiency below threshold (bank 2).
the car has slowly started to drive worse. Today as I was driving the car was shaking in the engine light was blinking. It had a hard time accelerating. It is parked and I'm not planning on driving it. But I'm trying to figure out if any of you have dealt with this. The previous code said it was something pre cat or the catalytic converter. Since I replaced the O2 sensor by the radiator I just bought the one by the firewall but that doesn't come in till Monday. But what I'm wondering is if this is a catalytic converter situation.