Moin from Hamburg, I have a Smart fortwo 451 CDI with 45 hp (the car has now 119,000 KM on the hump). Unfortunately I found the following problem last week, the car doesn’t pull properly (going into the emergency run) and then the engine control light already went on, Adac called error read out: P2355 Exhaust gas recirculation systems I had the AGR valve and the corresponding part removed and cleaned, all the faults etc removed looked like new. Motor started and the engine light went off by itself. When the parts opened, I noticed that the corrections were not completely dry but rather a little damp??? Maybe the AGR KÜHLER? The car only drives 100KM/h and has less power. After a few kilometers I noticed that the engine went back into the emergency run, i.e. only until the second gear and then I had to switch up the engine light by itself. After 70 KM the engine lamp already hit again with the same error: exhaust recirculation systems.