Help! P0175 CEL Code!
Thread Starter
Advanced
Joined: Feb 2010
Posts: 96
Likes: 4
From: Pattaya, Thailand
Help! P0175 CEL Code!
So I moved up here to CT from PA and I was up here for about two weeks when I had to drive home for some parts that I ordered for my Corvette. On the way back my check engine light came on. When I got home I hooked up my OBDII tool to it and got the P0175 code: System too Rich (Bank 2). I reset it and hoped it wouldn't come on again, but it did. It came on today when I was driving to work. Anybody know what could be causing this? I've never had it come on before. I have a paxton supercharger 1500sli done by East Coast Superchargers and a Borla exhaust on it. It's a 2005 coupe. My OBDII is telling me the car won't pass a PA Emissions test, so I'd like to get it fixed before then or else I'm screwed. Thanks in advance!
Thread Starter
Advanced
Joined: Feb 2010
Posts: 96
Likes: 4
From: Pattaya, Thailand
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
When the system goes rich on one side, it usually means that there is air coming in after the throttle body. The MAF reads the air and sets the fuel. IF more air comes in after the MAF (usually the TB) the system tries to adjust by adding more fuel and going nuts rich.
You're major rich on side 2 usually indicates the A/F has been set to fix the "extra air" of a vacuum leak. This can be confirmed if you can read your LTFT on your car. If one is +25, you have a air leak.
Elmer
You're major rich on side 2 usually indicates the A/F has been set to fix the "extra air" of a vacuum leak. This can be confirmed if you can read your LTFT on your car. If one is +25, you have a air leak.
Elmer
Thread Starter
Advanced
Joined: Feb 2010
Posts: 96
Likes: 4
From: Pattaya, Thailand
When the system goes rich on one side, it usually means that there is air coming in after the throttle body. The MAF reads the air and sets the fuel. IF more air comes in after the MAF (usually the TB) the system tries to adjust by adding more fuel and going nuts rich.
You're major rich on side 2 usually indicates the A/F has been set to fix the "extra air" of a vacuum leak. This can be confirmed if you can read your LTFT on your car. If one is +25, you have a air leak.
Elmer
You're major rich on side 2 usually indicates the A/F has been set to fix the "extra air" of a vacuum leak. This can be confirmed if you can read your LTFT on your car. If one is +25, you have a air leak.
Elmer
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Thread Starter
Advanced
Joined: Feb 2010
Posts: 96
Likes: 4
From: Pattaya, Thailand
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
The diagnostic sheet is a captured screen off of a DVD. The links will not work without the DVD. If you need that information, I can "capture" the link for you.
Elmer
Elmer
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Advanced
Joined: Feb 2010
Posts: 96
Likes: 4
From: Pattaya, Thailand
Elmer,
I'm not sure what has happened, but today (being the weekend) I went out to look at the car (and do everything you were saying) and when I started it up my check engine light was off. I had my scan tool hooked up and it read that my car was green, as in it would pass emissions. When the light was on it was reading red. So I'm not sure what has happened since then, but maybe it's alright now? I'm going to drive it this week anyway and see how it goes. If it comes back on I'll do the checks this coming weekend. I hope it stays off though of course.
I still want to thank you for you help. That will come in handy if it comes back on.
I'm not sure what has happened, but today (being the weekend) I went out to look at the car (and do everything you were saying) and when I started it up my check engine light was off. I had my scan tool hooked up and it read that my car was green, as in it would pass emissions. When the light was on it was reading red. So I'm not sure what has happened since then, but maybe it's alright now? I'm going to drive it this week anyway and see how it goes. If it comes back on I'll do the checks this coming weekend. I hope it stays off though of course.
I still want to thank you for you help. That will come in handy if it comes back on.
