Hello, I bought a used Golf 6 1.4TSI BJ 01.2010 on 02.09.14. Now I had an error on 06.03.15 which accompanied me to the present day. My exhaust gas control light went on. So I brought the car on 07.03. to the dealer who reset the error. This is the error “Nockswelle / crankshaft – ratio implausible”. So he sent me away. A day later the same problem. Since I happen to have a nice ADAC colleague on the parkp I had read the error and quickly advised me to change the control chain because you don’t hear the error immediately. If you hear it, the engine is completely broken and it would be even more expensive. So I gave it to the dealer. All the sensors were changed, the error was reset, a test drive was made and then the car was handed over to me again. On the 11th of March, so again a day later the error came back. Now the mechanics didn’t know any further Since it ran completely round and quiet and came to the conclusion that it must be the control chain and camshaft tensioner – that means open the engine. I immediately said that I have the car only half a year and that it still has to fall into the guarantee. Then the boss laughed and asked me if I have completed a used car warranty. Of course I had none. He explained to me that he had to stick only 1 year for damage to the electronics and everything else would be my Costs. The mechanic then informed me that I can count on at least 700-800€. Now I wonder if this does not flow into the liability for defects and the seller has to bear the costs? I ask for help! EDIT: When the sensors were renewed, I was told that they are a good control chain and are no signs of wear – therefore they were so confused as cih again. BUT – property defects liability does NOT apply to wear parts. Here, I was given the opportunity to said that there was no obvious wear!