The 01 VDP SC was running so well I haven't gotten around to replacing the plugs and original coils like I had planned.

Unfortunately, I got the dreaded Restricted Performance message this week along with codes: P1316, P0351, P0303 and P1111.

Am I correct that the plug and or coil in cylinder#1 are needing replacement at this point?

 

Switch the coils around & see if the codes correlate/match the movement.

 

I had multiple misfiring p1316 I ended up replacing 5 coils . Bought set from eBay for 99$ 1 year still working good

 

Thank you very much!