i have a 2003 gs300 with 140,000 miles and its been shaking on the stop lights and it will start slow when i hit the gas pedal. so i whent to autozone and i got the codes and they where
p1126
p0122
p2111
p0303

the p0122 and the p2111 y cant find what it is but can someone tell me what code is the one that is making my gs300 start slow and shake or what is the most important code that i need to get fix ?
thanks

 

Here's links from googling your codes.
P2111
P0122

The electronics on the throttle body are probably toast.

 

Read this thread from start to finish. Before messing with throttle body sensors, clean your MAF sensor really good and go from there. My throttle control motor was bad, but cleaning the MAF didn't hurt.
https://www.clublexus.com/forums/per...limp-mode.html

 

i read that link that you gave me thanks
I clean the maf sensor and also when I have the car in parking i press the gas and the idle stays high, i have to manually pull the gas pedal and it slows down.
tomorrow ill remove the lever assy sensor it looks that something is getting stuck and it wont let the lever return to its position