Hello , now have the following error codes read out. One has deleted the memory now and I should drive far away. Then one will see again which error will occur again. How long should I drive now? 500 km in 2 weeks? Is that enough? These are the errors: Error code- Motor-Bosch ME 7.01 Code: 37632 Engine control unit – Communication disturbed Code: 4874 Air quantity/mass meter, signal faulty Code: 8218 Valve Coolant circuit, temperature under control range. Could the problem described in the following text probably cause?? The workshop did not want to express itself yet! In the following I explained my problem with the slightly restless motor running while accelerating. : My V70 2.4 T , Mod.2001, had a little bit of power on which I bought it in November and made noises on the solenoid valve which regulates the turbocharge pressure (charge pressure control valve …). The part was renewed and the car finally had the right performance and For the first time I heard the turbocharger whistling softly from about 1800 revolutions. So it should be, shouldn’t it? But the solenoid valve still makes noises from time to time (it creaks a little bit about 10 seconds), when I turn off the car and turn off the engine…but that’s probably normal, because the turbo pressure is now there. But if one accelerates something under load, so in the 3rd or 4th gear from speed 60 full throttle, then one notices a slight jerking from about 2000 to almost 3000 revolutions. It’s not strong, but the driver notices it. It feels like you suddenly get a strong headwind (storm) from the front and the car is slowed down very easily in the acceleration. So it doesn’t accelerate cleanly….! This only occurred immediately after the change of the solenoid valve. First the dealer had the hope that it would play itself again when the car was driving for some time with the new correct and strong turbo pressure. t, but it’s not like that. (It’s probably been driven without turbo pressure for a long time) What else could cause an unround acceleration?? Thank you