Car throwing P0172 and P0175
#1
On The Tree
Thread Starter
iTrader: (8)
Join Date: Jun 2005
Location: Austin, TX
Posts: 145
Likes: 0
Received 0 Likes
on
0 Posts
Car throwing P0172 and P0175
The SES light came on the other night while driving; I got it pulled today and these are the codes I received (P0172 and P0175).
I did a search here and the only thing I found were problems people were having after installing larger injectors, tuning problems, or a backwards MAF . My car only has a cutout, so I don't think it is the first two and the MAF is not backwards.
What should I look for first, possibly the O2 sensors?
I did a search here and the only thing I found were problems people were having after installing larger injectors, tuning problems, or a backwards MAF . My car only has a cutout, so I don't think it is the first two and the MAF is not backwards.
What should I look for first, possibly the O2 sensors?
#2
Teching In
Join Date: Dec 2005
Location: Fort bragg Nc
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
this might be of some help
http://www.bowlingss.com/Mods/Engine%20Codes.pdf
says bank1 is rich and bank 2 is also running rich.
how many miles are on car?
http://www.bowlingss.com/Mods/Engine%20Codes.pdf
says bank1 is rich and bank 2 is also running rich.
how many miles are on car?
#3
On The Tree
Thread Starter
iTrader: (8)
Join Date: Jun 2005
Location: Austin, TX
Posts: 145
Likes: 0
Received 0 Likes
on
0 Posts
Thanks; I looked up the codes (and could tell it's running rich, you can smell the excess gas being burnt), but the light went away when I drove it tonight. It was on when I went to work, but off when I came home.
Any ideas as to what causes this? ~102k miles on the car.
Any ideas as to what causes this? ~102k miles on the car.
#7
Teching In
Join Date: May 2006
Location: New Smyrna Beach
Posts: 34
Likes: 0
Received 0 Likes
on
0 Posts
I you have access to a tech 2, or just go to a gm dealer, they can do a injector power balance test, to see if any are sticking open. I have the same thing wrong with my car, but still I haven't found the answer. Also if you have an aftermarket air filter, and you just cleaned it, the oil from it can dirty the mass air flow sensor, so check that really good. I see that you got both codes for bank 1 sensor one running rich, and bank 2 sensor one running rich, this is the same as mine. I'm thinking it might be aftermarket o2's on mine, do you have aftermarket ones?