My clk has no check engine light no service engine light but shows 2 codes. P0351 and p0328. Coil and knock sensor. I was running a diagnostic just for precautonary measures it shows no signs of knock or misfire. Should i replace the coil first? I recently did the plugs so that shouldnt be the issue.

 

Problem solved

 

So, how'd you solve it?

 

I was worried there was a deeper issue and it was quite frustrating since ive been having soo many problems with the car. In the end it was just the coil, i replaced it and the codes never came back. Car didnt feel any different afterwards.

 

Well, that was relatively inexpensive and easy. Glad its fixed!

 

Just curious, just one coil? My 05 CLK320 has 6 coil packs.