Hi there Scotty what does it mean when the check engine flash 20 seconds after the ignition is in the on position but not started, nissan maxima already had the catalytic converter replaced with new OEM ones, car feel like buck I had a code for my 02 sensor bank 1 sensor 1 and I replaced it a had another code for bank 1 sensor 2 but I cleared it and it still feel like it bucks a little
what were the codes and definition?
1st code was p2A00 I replaced 02 bank 1 sensor 1, the other was p0138 bank 1 sensor 2 and that’s the one I cleared with my scanner
It's important to know the ENTIRE trouble message, otherwise you're just tossing parts and not really addressing the problem. That's why I asked the definition. Codes can be easily searched on the web, as well as actions to take.
P0138 means O2 Oxygen Sensor Circuit High (B1S2)
that means you could have a short to 12V somewhere on the signal circuit.
Ok. And also would that mean that I have to replace my 02 sensor? Would I have to do the rest of them or just do the only 1?
No, you didn't read what I said. You don't know the sensor is problem. A diagnosis has to be done.
Like I said, if you search the code on the internet, there are many websites with good step-by-step instructions on how to diagnose the problem, and what to do about. Here is an example.
https://repairpal.com/obd-ii-code-p0138
Maybe when they replaced your cat they damages the sensor wires.