So my check engine light and DSA light turned on at the same time while I was driving last night. I checked the check engine light codes today and it was P0352 meaning it could be 1) poor electrical connection 2) faulty spark plug or 3) faulty ignition coil.

I recently changed the spark plugs and the car has no issues running. The only problem is that it is a little slow to start and seems to hesitate a bit. So I THINK it would be a faulty ignition coil causing this, but I'm not sure because other than slowly starting, the car has no issues. Does anyone have any advice to check this?

Thank you!

ps it is a 2000 volvo s40

 

You can ohm the two coils and compare results. You have a digital multimeter? They are cheap and work wonders for many other uses besides cars.

With the 2000-2004 1.9L engine it could be either the coil or the spark plug that one coil is paired with since one coil runs two cylinders. Inspect the long plastic bit that fits down into the head and attaches to the spark plug both under the coil and the other spark plug. That piece has been known to get hairline cracks that allow the spark to jump to the head before it reaches the spark plug.