My car started misfiring yesterday, so today I took it to Autozone to get them to scan it and it popped up 2 codes.
P300
P1153

One is a multiple misfire code and the other is that one bank has shifted lean.

I would like to know what could cause this. I changed my plugs about 2 months ago, but this just started yesterday. Any help would be appreciated.



------------------
2001 Navy Blue Camaro SS
White Leather Interior, White Face Gauges, Tinted Windows
SLP Lid, K&N Air Filter, Ported MAF Ends, SLP LT Headers, Race Pipe, SLP Loudmouth, Nitto 555R's