Hello everybody, have had the problem for some time that my spark plugs are extremely lost. I have to clean them every 3000-4000 km so that no detonators occur When turning off came the error 3-4-3 (according to Google “fuel pump relay interruption / short circuit” To the car, ZKD is new, VSD are new and oil trap also renewed. Has someone had an idea or already the same Feheler? Thanks in advance 850erElch