Hey all! My 2011 BMW 1 diesel has been acting up lately. The engine jerks, stalls, and the check engine light is on. The secondary air pump behavior seems odd too, either runs too long or not at all. I suspect it might be related to the air valve, but I'm not entirely sure. Has anyone dealt with similar symptoms? What was the actual problem and how did your mechanic fix it? Looking for real experiences to help diagnose this better. Thanks in advance!
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