Error codes P0171 P0174 29E0 & 29E1
#1
New Members
Thread Starter
Join Date: May 2022
Location: ORLANDO
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2009 BMW 528i N52
Model Year: 2009
Engine: N52
Error codes P0171 P0174 29E0 & 29E1
I am consistently getting CELs and these 4 codes on my 09 E60 528i. Car has rough idle, and the fuel trims are all the way up in the high 20's. Obviously the ECM is receiving lean mixture info and compensating by dumping extra fuel into the mixture. I have sprayed multiple cans of Carb cleaner all over the engine, but cannot pinpoint any massive air leak anywhere. The forums indicate various remedies including changing plugs, valve covers and MAF sensors. Does anyone out there have any experience in solving this issue? The car runs great on the road, just has a very rough idle. I'm attaching a copy of the fuel trim readings as well as the diagnostic printout. Any help would be greatly appreciated!
4 Persistent Lean Codes
Fuel Trims pegged at high levels
4 Persistent Lean Codes
Fuel Trims pegged at high levels
Thread
Thread Starter
Forum
Replies
Last Post