Hi, I have an Opel vectra b 2000 model, 2.0d DTI. Engine code: X20DTH. Bosch pump number: 0470504004. The thing is that the car starts and runs very nice to warm it up. Nor engine is hot around 50-60 degrees C when starting o shake that virtues of diesel missing. When the engine is just round 1000.1500 turns, if I give gas when going lit yellow light (Motor) and devour nor I grinder gas pedal. Diagnostic device displays error code: P1220. is there anyone who will help me fine what error. Thanks for your help