Hello, I know there are several threads about similar situations on here, however I think my situation is a little different and I am hoping to find someone who has experienced the same.

For starters,

2006 G35 Sedan 6MT

When I purchased the car, the previous owner had installed test pipes or high-flow cats that are still on the car. I am not sure what brand, however they do have built in anti fouler spacers.

About a week ago, I replaced both o2 sensors that attach directly to the cat - Bank 1 & 2 Sensor 2's. This eliminated my P0037 code. I still am getting the P0038. I then checked the VDC fuse in the engine bay. When I removed it, I dropped it into the bottomless pit under the battery. On my way to the store to buy a new fuse, the ABS light came on. Anyways, I purchased a new 50A fuse and the ABS light is still on. I have also cleared the codes twice and put several hundred miles on it since.

I previously owned a 350z and had test pipes. This only caused the service engine light so this also confuses me.

please note, the car drives perfectly other than the traction control and abs being disabled. It is NOT in limp mode and the gas mileage seems pretty normal. The brake fluid is full, my pads and rotors are in good condition.

I am just wanting to narrow done the issue to either the
1. cam shaft sensor
2. Bank 1 & 2 Sensor 1's
3. Unknown Brand Test pipes
4. Possibly a faulty Y-pipe??

I am not sure, looking for help.

Thank you in advance!

 

Which of the 4 O2 sensors did you replace.

For the ABS/SLIP lights you'll probably want to save time and just go to Nissan for a 1 hour diagnostic since Consult-II/III self-test is really the only way to know exactly why those lights are on. If you are pulling fuses with the battery still connected you may have damaged a computer. Always disconnect power before working on ANY circuit on a car.