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ddub · 2007-01-26, 09:49 AM

This code is lean running condition. I wasn't stepping on it when it came on. My car is at 60000 miles now, its due to get the spark plugs changed but i don't know if that would cause the problem. Should i try cleaning the MAF? (What should i use to clean it, WD-40) It never threw this code before and i've been running a custom tuned AP for a while. I read in another thread that someone had one of there recirc hoses come loose, which cause the problem. Others said that it could be caused by a boost leak, but boost is fine. Any idea's???

Thanks, Dave

2007-01-26, 09:49 AM	#1
ddub EJ22 Join Date: Aug 2005 Location: Reno, NV Posts: 110 Car: 04 wrx, bunch of mods	Threw a code PO171 This code is lean running condition. I wasn't stepping on it when it came on. My car is at 60000 miles now, its due to get the spark plugs changed but i don't know if that would cause the problem. Should i try cleaning the MAF? (What should i use to clean it, WD-40) It never threw this code before and i've been running a custom tuned AP for a while. I read in another thread that someone had one of there recirc hoses come loose, which cause the problem. Others said that it could be caused by a boost leak, but boost is fine. Any idea's??? Thanks, Dave