Fault code P0234, any advice?

[Brock911]

Identified a "0234" fault code today... "Turbo - Super Charger Overboost condition".

Did a search on this forum and came up empty on results.

The car runs good without hesitation upon acceleration and no odd behaviour.

I did have a CEL diagnosed by the dealer as 0491 and 0492 relating to SAI system but I'm not sure if the two are related, any ideas what I might be up against?

Online search reveals the following...

OBD Code P0234refers to

The PCM disables (bypasses) the supercharger boost and sets a diagnostic trouble code (DTC) to keep from damaging the powertrain (engine or transmission) during potential harmful operating conditions.

Symptoms

Possible sumptoms of OBD code P0234

- Engine Light ON (or Service Engine Soon Warning Light)

Causes

Possible causes of OBD code P0234

- Brake torque (brake on and throttle at wide open). - Transmission oil temperature (TOT) exceeds calibrated threshold. - Engine over temperature. - Ignition misfire exceeds the calibrated threshold. - Knock sensor (KS) failure

Possible Solutions

Check for other diagnostic trouble codes accompanying P0234, or check appropriate and available PIDs related to the above possible causes.

[jpflip]

Hey hey Mike!!! Welcome to Renntech. I already mention on Rennlist that I am suspecting one of the sense line coming to or going from the N75 valve also called by Porsche cycle valve or timing valve. After you removed the airbox and also the intake assembly (not a big job) you will found a lot of small black sense lines. Look closely to see if they are attach properly in every position and has far you can see. Going to the right towards the recirculation air pump and also to the N75 valve. This is a grey small plastic rectangular box with sense line going to it and also an electrical plug. It is located just below the fuel cooler. See pictures for help....Remember you can get the repair manual for the TT on 6speed if you need direction for the removal of the airbox or the intake: http://www.6speedonline.com/forums/996-turbo-gt2/228714-ok-guys-here-link-shop-manuals.html

Edited June 19, 2013 by jpflip

[Brock911]

Once again J.P. thank you for your input and diagrams. I will use your reference notes and have a look. I plant to be in Montreal soon perhaps we could meet?

Many thanks,

Mike

[jpflip]

Mike, if your are driving your Porsche we can look at it together!!! You are welcome at home anytime or I can meet you in a bar!!! First time in Montreal?

[Brock911]

Mike, if your are driving your Porsche we can look at it together!!! You are welcome at home anytime or I can meet you in a bar!!! First time in Montreal?

Love Montreal, have been coming each year for many years on pleasure. Downtown and old Montreal, Hotel St. James, Queen Elizabeth, The Beaver Club, Gibby's and the cafes in little Italy, love it all. Missed the race this year but should be in town in early September for labor day if not before.

Would enjoy meeting you, if you are in the Niagara area or passing through be sure to let me know?

Thank you again for you help,

Stay well,

Mike

[jpflip]

Welcome and thanks for the offer Mike! Anxious to see the outcome of your fault code, stay in touch! J.P.

You should take a walk on Mt Royal street and St Denis street, full of Café, bars and amazing restaurant. Also full of french canadian with strange accent but that's another story... :cheers:

Edited June 19, 2013 by jpflip

[wross996TT]

Welcome and thanks for the offer Mike! Anxious to see the outcome of your fault code, stay in touch! J.P.

You should take a walk on Mt Royal street and St Denis street, full of Café, bars and amazing restaurant. Also full of french canadian with strange accent but that's another story... :cheers:

Just stay clear of Wicked Wandas and Chez Paris...LOL

[Brock911]

Welcome and thanks for the offer Mike! Anxious to see the outcome of your fault code, stay in touch! J.P. You should take a walk on Mt Royal street and St Denis street, full of Café, bars and amazing restaurant. Also full of french canadian with strange accent but that's another story... :cheers:

Just stay clear of Wicked Wandas and Chez Paris...LOL

Are you kidding me, these clubs have a level of sophistication unmatched, where else can you drink beer and shout while enjoying the ballet?

[jpflip]

Welcome and thanks for the offer Mike! Anxious to see the outcome of your fault code, stay in touch! J.P.

You should take a walk on Mt Royal street and St Denis street, full of Café, bars and amazing restaurant. Also full of french canadian with strange accent but that's another story... :cheers:

Just stay clear of Wicked Wandas and Chez Paris...LOL

OH MY GOD!!! Wross you went to "Chez Paré" Ahahah that's funny!!!!! And also Wicked Wandas!!! Too funny but obviously part of Montreal nightlife...Of course I never went there... :rolleyes:

Welcome and thanks for the offer Mike! Anxious to see the outcome of your fault code, stay in touch! J.P. You should take a walk on Mt Royal street and St Denis street, full of Café, bars and amazing restaurant. Also full of french canadian with strange accent but that's another story... :cheers:

Just stay clear of Wicked Wandas and Chez Paris...LOL

Are you kidding me, these clubs have a level of sophistication unmatched, where else can you drink beer and shout while enjoying the ballet?

:thumbup:

Edited June 20, 2013 by jpflip