Toni santo

My Audi the gear box went into limp mode and it doesn't move it came out with 3 codes after I scanned it with obdeleven the codes are PO74800 PO74500 PO441 after it had been parked for about 2 weeks I started the car and the codes went away and the car started to move again and then after a while the problem came back I suspect it might've a gear box plug was corroded or has liquid or water inside anybody went through this or can help me with this matter

I'm a truck driver, and my company has a mechanic who checked everything, including the electrical wiring. He told me he checked the battery and it was fine, but he gave a diagnosis. Wrong 

Yes, I bought a new battery and asked a colleague who has Obdeleven to register it, and all the communication problems disappeared. 

Hello everybody, a quick update relating the problem about the Audi a6 c7 I just decided to buy a new battery and fit it and for to my surprise and all the warning on the dashboard and canbuz communication problems are gone you guys are right. Thank you so much you guys are stars

I saw someone selling the same car as mine with the same problem. I spoke to the owner, but he doesn't know what the problem is either. 

The battery has been checked and is fine; I'm now waiting to go to Audi, which is scheduled for March 3rd. 

Thanks for the advice I will try to take one of these garages Kwik fit or Halfords so that they can do the checks for this vehicle. Because the fault just appears when the vehicle reaches the operation temperature can it be related to the temperature sensor? Thank you.

I bought it privately and I tried to get a refund but I was unsuccessful and then I booked an Audi dealer diagnosistic but just on the 3rd of march until then I have to park it. Thank you for your reply. In the meantime I'm going to test the battery and I'll let you know.

Can anybody help? I bought this car and I drove for around 15 days after that when the car reached normal temperature all the communication faults u code and disingages the gearbox if you let the engine cool down the car starts working again. If anybody has any information about this problem could you please help thank you.