P1150 Toyota -

Question

2000 Toy Avalon failure codes 1150 with 0300 0302 0304 0306. The car drives just find however strugles when idleing while the car is in drive and at a stop, Idles just fine with the car in Neutral and at a stop. Other then that drives just fine.
I know what the failure codes represent, but not sure where to start. I have replaced the spark plugs. I took continuity readings on the 4 pin connector on the ignition coils, but am not sure of the expected ohmage. Only one on cylinder number 5 had any different readings then the other 5. If the problem is the ignition coil on the number 5 cylinder then why no failure code of 0305?
I am thinking that 1150 failure code might be causing the other failur codes. Any ideas would be greatly apprectiated.
Thanks