Hi. My name is joe and I have an 07 audi a4 sline. car has about 143,000 and I'm having an issue with my epc and traction control lights randomly coming on. When they come on the car goes into limp mode. It does it randomly so I cant figure it out. The car has an apr tune. I replaced the gas peddle with a used one. the person who had the car before me already replaced the wiring harness to the peddle and the throttle body. I have cel for codes p008a,p0089,p2138. This thing is driving me crazy and it needs to go through emissions. I did a tune up when I bought it, new belts sparkplugs cam follower ect. and I just replaced the fuel filter. Any help would be appreciated, new to the forums so idk what I'm doing lol.