Hello V40-community, after it burned about 2 weeks times for a day but is extinguished again, now for 3 days permanently the engine control light of my V40 1.8 from 2001. The car behaves largely inconspicuously, only in the cold run the car jerks back and forth discreetly. If it is warm, it runs perfectly. My question: Can the quite old spark plugs be the trigger for the motor control light? Let it be read out is probably the most meaningful step, or what do you mean?