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 95 Riv problem code P0257

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Mike95
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Name : Mike manchester
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PostSubject: 95 Riv problem code P0257   Thu May 20, 2010 10:04 pm

Hello all, new here. Just stumbled on this great forum and had to register.

The problem I am having is the Check engine light came on at wide open throttle last night. My Actron 9145 Scanner stated a code of P0257, description: Turbo boost sensor signal circuit problem. Last time i checked my car didn't have a turbo ? . If anyone could make heads or tails out of this I would appreciate it.
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Abaddon
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Name : Scott
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 10:26 pm

First off, welcome!

Are you sure it's not P1257?
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Eldo
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 10:42 pm

Abaddon wrote:
First off, welcome!

Are you sure it's not P1257?


Isn't that also a supercharger overboost code?

(Disclaimer: I'm running off of '98 codes, so maybe they trashed the whole heirarcy...)
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Abaddon
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 10:44 pm

Yes P1257 is a "boost problem" code in a '95. P0257 doesn't exist.
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Eldo
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 11:32 pm

Abaddon wrote:
Yes P1257 is a "boost problem" code in a '95. P0257 doesn't exist.

Right, and Mike doesn't think he has a 'turbo'...

Michael, do you have a "supercharger" you haven't told us about??

P.S. - Please fill out your "signature", so folks know what we're dealing with.
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AA
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 11:43 pm

Since this was posted in Supercharged Tech, and Mike has a '95, we can assume it's a Series I Supercharged.

_________________
'98 SC Riviera 281k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch

^^^ SOLD ^^^ frown

'05 GTO 85k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun


'70 Olds Ninety-Eight Holiday Coupe 116k miles 455 Rocket V8
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Mike95
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Name : Mike manchester
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PostSubject: Re: 95 Riv problem code P0257   Thu May 20, 2010 11:58 pm

Forgot to go into preferences to attach my signature. Should be working now. Yes it is a 95 buick riviera supercharged the code shows up as P0257. Just checked it 10 minuets ago and still showing on the tool when i check read code option. Maybe my scanner is damaged in some way.

Abaddon what part or electrical item would spring P1257 code?
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Abaddon
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PostSubject: Re: 95 Riv problem code P0257   Fri May 21, 2010 8:40 am

Mike95 wrote:
Forgot to go into preferences to attach my signature. Should be working now. Yes it is a 95 buick riviera supercharged the code shows up as P0257. Just checked it 10 minuets ago and still showing on the tool when i check read code option. Maybe my scanner is damaged in some way.

Abaddon what part or electrical item would spring P1257 code?

P1257 is a Boost Solenoid Fault. If you can be sure that this is what is, I can post a flow chart for you to check it.....
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Mike95
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Name : Mike manchester
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PostSubject: Re: 95 Riv problem code P0257   Fri May 21, 2010 5:08 pm

Thanks for the offer. I can't be sure if it is the boost solenoid or not. Looking into placing a boost gauge to see if I am only getting 2-3 psi or the normal 6-7. That should hopefully tell me if there is a problem with it.

Also the check engine light went off today while driving home. Checked with the scanner and still shows the same code.Code has been cleared. Will try WOT again to see if the error code comes up.
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Abaddon
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PostSubject: Re: 95 Riv problem code P0257   Fri May 21, 2010 5:19 pm

Well, here is the flow chart anyway of the boost solenoid. Hope it helps ya!

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Mike95
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PostSubject: Re: 95 Riv problem code P0257   Sat May 29, 2010 12:31 pm

Thank you for the flow chart. Used it and found it is working correctly.
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Abaddon
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PostSubject: Re: 95 Riv problem code P0257   Sun May 30, 2010 2:37 pm

np wink Hope the system just "farted" and the SES light stays off.
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