I have a 2009 Camry 2.4 engine. 6 months ago had a code PO304 for #4 cyl misfire. Since the car had 95000 miles I replaced all 4 ignition coils. It ran good for a couple of months and then ck engine light came on for PO351 ignition coil 'A' fault. Since then I have had multiple codes for misfires and coils primary or secondary circuit faults. The car won't idle most of the time and shutters when driving. Have changed plugs and again ignition coils. It will run fine for a minute or a day after I change the coils around and then back to the misfires and faults. Don't know if this has anything to do with the problem it is using a quart of oil every 1500 miles which is not leaking or blowing smoke.

 

P0304 can be due to host of issues other then a coil.

P0351 is for No 1 igniter circuit.

The oil consumption issue is common and should not cause problems with ign.

See private message.

 

Thanks!