Hi everyone. I have a major problem with my Audi. It doesnt like to start on really hot days. I ran the codes and got the code for the rpm sensor and engine feed sensor. We replaced both of them and it ran fine for like a day. Then earlier it took forever to start. It sat there and turned over a bunch of times before finally firing. Now we get a code for the coolant temp. sensor implausible signal and bank 2 - probe 2 no signal. Whats this bank 2 - probe 2?! help please!

 

Yeah its your coolant temp sensor, located at the back of the engine if you have a 1.8T: AudiWorld Tech Articles

 

Maybe the coolant temp sensor is my problem too...