Well this is no fun...7 PSI max right now w/ max Timing retarded....anyone??? 2144 (Blink Fault Code), VAG1551/2 Fault Code Number 00540 Knock Sensor #2, (Cylinders 3, 4, 5) Open or short circuit, Defective sensor or wiring Symptom: Timing retarded, High fuel consumption, power loss, Boost pressure not attained