So a freinds van needs an inspection, But its throwing a P0172 thats a
P0172 Fuel Trim System Rich
Possible O2 sensor?
or fuel injectors cloged?
it has 96,000 on the clock…
its a Base model 3.4 FWD…
FOUND SOLUTION CHECK POST 4.
clear the code and it might be fine for a while. If it comes back it could be anything from a clogged air filter to partially plugged injectors id think
Cleared the code, and before the system can go threw its checks again it comes back, or I would just get it inspected and let it come back I dont care the lights on.
Im going to try the O2 sensor sunday see if it helps… Doubt it thought, I figure it would threw its own code for 02 Sensor…
So I opened the hood today to look for the O2 sensor plug and noticed the MAF is in backwards… fliped it… didnt have my code reader to clear it and see if that fixes it…
(I asked, she said she had the Air filter replaced at walmart)
wtf, maf was backwards? i can’t imagine trying to shove one in backwards… probably took a lot of effort do so.
http://www.obd-codes.com/p0172
Some things to check in there.
when fuel trim is rich it is resoponding to a lean situation so u could possibly have a vacuum leak or something making the car run lean. or is it saying the car is running rich and fuel trim is negative?? which would be responding to a rich situation