Hello people need a advice from you I have an Audi A4 2.5 TDI built in 2005 with 149,000 km. Last week I approached the ESP light and my car somehow blocked, which I could not drive faster and after half an hour also the engine control light approached. Accordingly I had it read out with my OBD device and there came the error message: P0252 injection pump A – circuit area /property fault (nock/red/injection) could me there someone else help.? LG