P0171

Posted: Fri Sep 05, 2008 6:50 am Post subject: P0171

Can code P0171 be deleted from the PCM? I have had rgis code for some weeks now ever since I installed my new TB. I have been chasing for a leak some where and can't find it at all. The code comes and goes so I just wanted to know if it can be deleted
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2000 PONTIAC GRAND PRIX GTP
VS|TOGâ€™s|ZZP II IC|ZZP Stg II TB|Stg 4 Gen III|2.8 MPS

Posted: Fri Sep 05, 2008 8:23 am Post subject:

Not recommended... that's the Lean code, meaning your pcm keeps trying to add fuel & the trims are staying +16 for xx seconds alot. Might just be a tuning issue, since you're getting more air with the bigger TB, if there's no leak causing it another way.

- Dave
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2004 Regal GSX - YouTube channel Stattama T67BB, A2W IC, ST5, heads, L32, GMR diff/chain (11.46 w/ Z7 T66, IS3t cam)
2006 Grand Prix GXP - K&N intake and mufflers only, basically stock for me
2012 F-150 EcoBoost SuperCrew 4x4 - stock DD and roadtrip vehicle
1998 Daytona GTP #838 - I/C*d MP112 L26 - Rust in Peace, engine saved

Posted: Fri Sep 05, 2008 9:04 am Post subject:

Ive been fighting the opposite, 0172 ever since I put new rails on.
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'08 TrailBlazer SS Black/Black

Posted: Fri Sep 05, 2008 3:55 pm Post subject:

I've been fighting both a p0140 and 0171 since I bought the car. Although I think the 171 went away. It came back the other day after I unhooked the battery and I havent driven the car yet to see if it would come back, but the 0141 I've had since I changed the front o2 to a new Delco unit. I gotta have Larry take it out for me at some point so I can get the car inspected. I really dont feel like buying a new o2 sim if the one thats already in there is ok and Im getting the code for some other reason. I dont see how a sim could just go bad out of nowhere Confused

Posted: Wed Sep 17, 2008 10:17 am Post subject:

i have an 02 sim if you want to try it out . i don't need it anymore . if you want it we can meet up and you buy me a soda and its yours

Posted: Wed Sep 17, 2008 12:04 pm Post subject:

Figures lol. I just bought one from ZZP to see if it clears it up. I hope it does, I really dont want to try and sell a freakin o2 sim.

Posted: Wed Sep 17, 2008 12:14 pm Post subject:

I would recommend you hook up with Larry ASAP before you get ticketed for no inspection. Then you can have him reflash your PCM to original after inspection and at your/his convenience. Tickets are no fun Sad

GOOD LUCK!
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2001 Silver GTP coup 11.880@116.17 Fun Driver
1998 SilverMyst GTP sedan 13.716 Sold
2010 Black Camaro Daily Driver
1969 Firebird convertible 455 FUN

Posted: Wed Sep 17, 2008 12:18 pm Post subject:

Scanning is a big means of helping the 171-172 guys. Most 140 guys can be helped by proper code shut-off in the tuner.

- Dave

Posted: Wed Sep 17, 2008 3:26 pm Post subject:

Well right now the only way I'd get in trouble for no inspection is if I got pulled over. I took a picture of my wifes sticker and printed it out and taped it in my window so it looks like I have something there other than a white temp sticker from the DMV. Im hoping the sim takes care of it though, I really just want the car to be legal as can be.

Posted: Sun Oct 12, 2008 2:34 am Post subject:

What exactly is the 0172 code? It just came on in my car after I put a DHP PCM in it. I have a scan gauge and everything seemed fine...

Nevermind...
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2000 GP GT (Bronze) - L67 swapped)-It's Far From Over!

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