Have a Lupo with AUC engine, 1.0 liters 50hp, first there was always the error cylinder 3 misignition, also cylinder 2 or 4, but ignition system is ok. Everything exchanged. The error message no longer comes. Now the above error is continuous. Fuel consumption is very high. Injection period. 4.92ms -5.33 ms, varies very quickly between these two values. lambda probe varies hissing -5 and +5%. What is broken? Lambdason, control probe, swap?