Hi I am a new user hope maby someone could help me I have these codes comeing up and cant figure out why the codes are po172 and po175 system too rich bank 1 and bank 2 what could cause this and how can i fix it thanks in advance for your help

 

Welcome to FTE william! Check out this link.

http://www.obd-codes.com/trouble_cod...gen-sensor.php

Good luck!

 

Thanks KingRanchMan02 that link explained alot I found a hose going to the pressure reg that was deteriorated so I replaced it so far no engine light I do have a k&n filter if the light comes back on I will clean the MAF sensor thanks for your help

 

Glad to be of help! See you around FTE!

 

Well light came back on so I cleaned the MAF and drove the truck for a while light came back on again hope I can figure this out soon all this thinking is making my head hurt guess I will start checking vac hoses I am really holding out taking it to the dealer I dont like to be defeted

 

Be diligent, you'll find the problem. You might want to check the DTCs again to see if anything has changed.

Have you recharged the K&N filter lately? If so, excess oil on the filter can be gumming up the MAF and you may want to clean the MAF again.

Good luck!

 

I had the same problem ,I cleaned the MAF and the code came back. After a couple of days trouble shooting, changing hoses, tightening clamps, I ended up having to change the MAF. I just when down to the pick and pull, paid about 30 buck and no more code. It has been two months now and still no codes.

I hope this helps you out.

Tom

 

well I changed the MAF went about 20 miles light came back on same codes I also cant seem to find any vac leaks could this be an O2 sensor problem

 

Did you change it(MAF) with a new one or a used one?

If it was used, did you clean it first?

Tom

 

I changed it with a reconditioned one from autozone

 

From what I read throughout this forum and other forums, it is very unlikely that the O2 sensor is bad. Since I changed my MAF, I have not had any problems.

I know how frustrating it is to try and solve a problem like this. I wish I could help out more.

Tom

 

I'm having the same problem (P0172 only). I did clean my K&N filter and oil it, but that was months ago. I have a Granitelli High-Flow Mass Air (installed over 3 years ago). Have also been running a JET Chip (stage 2) for 3+ years. I had the trouble code cleared when I was getting an inspection sticker (the check engine soon light actually came on when I was on my way to the station). Luckily I used to work there and I only needed a safety check.

The check engine soon light came back on a day or so later. I disconnected the battery and pulled the JET chip and left battery disconnected for 30 mins. I left the JET chip out and reconnected battery and drove it for a while. Light hasn't come back on yet. Will be doing some more driving to see if it will come back on. I find it sometimes it's good to reset the computer and leave the JET chip out once in a while. This is the first time I've had the check engine soon light come on.

BTW, I don't drive the truck much. Sometimes it will sit for a week or two and longer. Might some dirt/gunk build up from non-driving? I should start it up a couple times a week and take it for a quick spin. I also don't want to take a trip to the dealer, even though my warranty should cover everything.

 

Well, service engine soon light is back on. Only took a few days of driving. The truck actually hestitated while I was accelerating on the highway, then the light came on. Haven't checked for codes again, yet. Don't want to make a trip to the dealer, even though I'm still covered under warranty. Might hit up an Autozone and see if they will check it.

I should really buy an OBDII code reader or maybe a reader/clearer.

 

when O2 sensors fail they fail rich, rich=low voltage, its like a default in a way, think about it, how can something fail to high voltage?

 

I found out what my problem was with the po172 & 175 codes the fuel pressure reg was bad it had too much fuel pressure so it was dumping too much fuel into the engine after I replaced it every things been ok no more codes hope this helps