Please help me with these codes p0550, p2122, p2138, p1229

[skeeter3z]

This is my first Z its a 2003 6 speed touring. I bought it cheap knowing these problems were there. i can make it to work fine in the morning about a 5 mile drive. On my way home it normally messes up as i exit the off ramp. I have been as far as a 12 mile staright shot as long as im on the highway it is fine but as soon as i start to stop and go it will go into limp mode. i have a brand new pedal and sensor assembly on it. i have tried 2 throttle bodys. The kicker is it seems to do it when its hot or at operating temp. I can check volts when its cold at the pedal sensor and its around 5 volts as its suppose to be. Once its hot and in limp mode the volts drop to around 1 volt. Im sure this is the cause, but what is getting hot and causing me to loose power supply? The car also has a evap code but i dont think that is the cause for limp mode, i will tackle that later on. I have to limp the car home from work when i exit as i stated but after it sets a few hours its ok for a few miles around the block. Once its hot the codes come right back as soon as i reset them and start the car. i have done all the relearns as well. where should i look from here guys

[BusyBadger]

Sorry it's a problem that brought you here.

With the 0550 (PS issue) and the 2122 & 2138 (TPS issue) I wonder if it could something going on with the VDC.

Try turning off the VDC (or maybe even pulling the fuse completely) someplace where you feel comfortable doing so and see if the Z goes into limp mode like it normally does.

Welcome to NICO!

[skeeter3z]

Where is the fuse for vdc sir

[skeeter3z]

I got it thanks again ill give it a try