Vdc off and SLIP light on and limp mode

[lukypetr]

Hi everyone, I'm new to the forum. I just purchased a 2003 350z 6 speed. I purchased this car with the current problem and have searched the threads but I still have not come up with a solution.. VDC OFF and SLIP lights are on and it will not rev past 2k rpm. I ran the codes and get P2135, P0550, P0222, and P0123. I have done the ecu reset and relearning procedures but the cel light stays off for a couple of seconds then comes back on. The vdc and slip light never go off and they come on immediately when I start the car. I have also tried unplugging the battery for 24hrs and still no luck. I figured that it might be either the throttle body or the position sensor on the pedal, Any ideas how to narrow my choices? Any help would be appreciated. Thanks in advance.

[sx moneypit]

From my experience it sounds like the throttle body.Have you checked to see if it is sticking?

Welcome to NICO!

[lukypetr]

No, I haven't checked that, but I do hear it open and close during the learn procedure.

[jerryd1987]

do you have an aftermarket amplifier in the car? the tps sensors are in the throttle body but the pedal sensors are on the pedal one going bad wont affect both and its highly unlikely for both to go bad at the same time.

[sams350zgt]

I think its more to do with the sensor at the accelertor pedal end more than the throttle body that needs checking out.

[RED_DET]

In most cases this issue is related to the TPS....