Engine check light came on.

[CDNFB]

Re: Engine check light came on.

First you said:

I already have a o2 casper sims after the cat.

then you said:

I replace both the new map sensor and a new o2 sensors

See, I'm lost now, well actually I am most times, but now more than ever.

You have an O2 casper sim to simulate a deleted (removed) O2 sensor, then you replaced the deleted O2 sensor. Wow! That didn't cost you anything!Replacing an O2 sensor that wasn't there with an O2 that now isn't there! I think I know why your code didn't go away!:poke:

[bigralph 2]

Re: Engine check light came on.

Sorry man that I wasn't to clear. Bank 1 sensor 2 is the one that is giving me the code. That is located in the driver side were my headers are located. The O2 Casper sim is located after the cat. When I installed my headers I bough everything new from the headers to the 02 sensors. The 02 sensors have two year warranty on them so I had free replacement. I think the problem could be my exhaust. I have a 3" Y pipe and a 3" car sound cat going in to the stock 2.25 S pipe. Due to the exhaust fumes. I think the back pressuring to the 02 sensor that is causing the sensor to read that code. The other possibility could be my cat is going bad do to all the exhaust fumes being stock in there trying go in to a the stock 2.25 S pipe. I could be wrong in all scenarios or couple be a more severe problem that I'm not a ware of. How do I know when the cat is going bad?

[bigralph 2]

Re: Engine check light came on.

I think is that cat. When I start the car in the morning. The cat sounds like is humming in higher RPMs, but is not rattling in side. It goes away when the RPMs go down. Again I think is the 3" car sound cat going in to the stock 2.25 S pipe.

[BLLDOGG]

Re: Engine check light came on.

your bank 1 sensor 2 is the sensor after the cat. bank 1 sensor 1 is your manifold sensor.

and no, your exhaust size is not causing this code.

your sim is not working or your circuit is damaged. :)

simple as that

[bigralph 2]

Re: Engine check light came on.

Thanks Blldogg for clearing that for me. The stupid people form AutoZone told me that bank 1 sensor 2 is located driver side manifold. THANK GOD!! that I still had warranty on the o2 sensor if not I would of spent another $80 for nothing. Another note. I check the sim and it looks like the sim is not working. The little red light doesn't come on anymore. I'm going to buy a new today.

Thanks again for answering all my questions.