2 weeks ago, my wife bought her first 2008 Nissan Maxima 3.5 SE. Car ran and drove perfectly fine with 0 issues aside from an o2 sensor, for the first 5-6 days. The other day she was driving to Walmart and the car just lost a majority of the power. It wouldn't get up go and was stuck doing between 10-15 mph. She said tmshe would press the gas pedal and it would go all the way to the floor without increasing rpm or raising the speed.

When I had it scanned for codes it popped these:

C1131 - Engine Signal 2
P1726 - Engine System Error
P2A00 - Oxygen Sensor Bank 1 Sensor 1
P2135 Throttle/pedal Position sensor/switch A/B Voltage Correlation
P3833 - No Definition
P0138 Oxygen Sensor Bank 1 Sensor 2

Now the only code it threw when the vehicle was first purchased was for the o2 sensors. I didnt even get to wait until the weekend to fix those. It threw all the rest of the codes at the same time.

I've tried doing my research and a few things have popped up for me to do, but all result in hundreds a piece per issue. I was hoping someone here may have seen and/or has had experience with this issue before and would be able to help me move forward before I just start blowing tons of money replacing everything.

Thank you for all help and trouble shooting!

 

Mine ended up being clogged cats and MAF sensor. My codes did show MAF and CAT banks though.

 

Originally I was thinking the possibility of a clogged catalytic converter, but started looking at other possibilities because of the lack of a cat code and that I seen it has 2 catalytic converters and wouldn't know which it would have been. But a lot of googling? I only found things bringing up the cat on the radiator side.

 

Start with the throttle pedal position sensor which is on the pedal. I had the same issue, it idled fine but would not rev more than 100 RPM above idle. I re-soldered all the contact points around the white PCB with the resistor tracks inside and had no issues for the next 3 years.