I changed the G28, RPM sensor but not starting yet. I checked for spark which was present in all 8 cylinders.i think fuel pump not pushing gas. i checked the noise from pump while switching on the ignition. no noise was there. when i checked for electric continuity through pump, it was ok.i think ECU not giving current to fuel pump. i pulled the code it z still 2111 despite i put new sensor. may be ?bad electric connection of G28 with ECU.this may be the reason.where is ECU located and how to check.i ve no VAG 1551 but know how to blink the codes. i need help and guidance. Thanks a lot.