K-light code 52, exhaust values ok

[Charlskalas]

I noticed something else while trying to fill up the tank today (for the first time). The nozzle shut off directly (several tries, different stations), although the tank should be half empty. I am suspecting the charcoal canister and will try to blow through it. I wouldn’t suspect the charcoal canister to cause the hesitant acceleration, but could it trigger the k-light?