Well I recently changed out my exhaust and one of my cats was bad so I was getting the Cat Efficiency code, I cleared that but 3 days during this week i have been getting a P0011 code I have reset it and last night I even took the battery cable off for two hours while I threw my test pipes in, on my way home from work today there goes the awesome SES light again...Scanned it with my handheld and its P0011 AGAIN!! I dont know what the heck the problem is, one of my friends tried to claim its because of my MD 5/16 spacer but I put that on like over a month ago and it just now started happening...I read on another Maxima forum that it could need to have the oil changed?? Weird thing is when I came up to my driveway tonight the oil light did flash on for a quick second then back off so maybe I am low and need a change....The car is a 04.5 Enthusiast Mods in Sig...Any help??

 

P0011 is related to the Intake Valve Timing control on Bank 1 (driver's side). It could be a problem with either the crank position sensor or the cam position sensor.

 

Check your oil level.... poor oil pressure will trigger this DTC. The variable valve timing is driven by a solenoid that uses oil pressure to shift the cam.