Over-boosting...

[Type_R]

Now generally most people on here would agree more boost = more power = awesomeness! However, since I fitted my new G DV, my mapped GTi has decided on the motorway to go into limp mode. VCDS is throwing a 16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition) error.

I don't get any lights on the dash and a simple restart gives me my turbo back! Clearly as its a brand new DV I know its not that. The question is what else could be causing it? Reading around there seems to be no general consensus:

• PCV - never changed in the 104k miles (8 yrs of ownership) - should I change this? Can it cause over-boost?
• Coil packs - changed under warranty about 2 yrs ago.
• spark plugs - changed at 80k miles so due to be changed at 120k

Any ideas what I can log in VCDS to get a better picture of what is going on? Is it worth changing any of the above to cure this condition which is very irritating because when it is not in limp mode it pulls like a train and feels awesome!

[edd666999]

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Boost Pressure too high
Reduced Power Output


Possible Causes
Hoses incorrectly connected, disconnected, blocked or leaking
Boost Pressure Control Valve (N75) faulty
Boost Pressure Sensor (G31) faulty
Turbo Charger stuck/faulty


Possible Solutions
Check Charge Pressure Control System
Perform Output Test (to check the Turbo Charger)
Perform Basic Setting (to check the Charge Pressure Control)
Perform Pressure Test to locate Leaks
Check/Replace Boost Pressure Control Valve (N75)
Check/Replace Boost Pressure Sensor (G31)
Check/Replace Turbo Charger

[Type_R]

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Boost Pressure too high
Reduced Power Output


Possible Causes
Hoses incorrectly connected, disconnected, blocked or leaking
Boost Pressure Control Valve (N75) faulty
Boost Pressure Sensor (G31) faulty
Turbo Charger stuck/faulty


Possible Solutions
Check Charge Pressure Control System
Perform Output Test (to check the Turbo Charger)
Perform Basic Setting (to check the Charge Pressure Control)
Perform Pressure Test to locate Leaks
Check/Replace Boost Pressure Control Valve (N75)
Check/Replace Boost Pressure Sensor (G31)
Check/Replace Turbo Charger

Thank you for copying and pasting the ross-tech wiki!

I was hoping for a slightly more insightful response from people who might have experienced the same.

[edd666999]

Ah sorry I missed the bit in the original post where you explained that you already followed the troubleshooting available to you from the Ross tech site. All I saw was a copy paste off the error code.

Lets hope no one else gives you some info you already know but haven't told us.


I had this issue and it was my n75 valve by the way. Stuck open, if you would like a part number let me know.

[fab5freddy]

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Boost Pressure too high
Reduced Power Output


Possible Causes
Hoses incorrectly connected, disconnected, blocked or leaking
Boost Pressure Control Valve (N75) faulty
Boost Pressure Sensor (G31) faulty
Turbo Charger stuck/faulty


Possible Solutions
Check Charge Pressure Control System
Perform Output Test (to check the Turbo Charger)
Perform Basic Setting (to check the Charge Pressure Control)
Perform Pressure Test to locate Leaks
Check/Replace Boost Pressure Control Valve (N75)
Check/Replace Boost Pressure Sensor (G31)
Check/Replace Turbo Charger

Thank you for copying and pasting the ross-tech wiki!

I was hoping for a slightly more insightful response from people who might have experienced the same.

Type_R i can't see people rushing to your aid with a response like that 

[Saintsteve]

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Boost Pressure too high
Reduced Power Output


Possible Causes
Hoses incorrectly connected, disconnected, blocked or leaking
Boost Pressure Control Valve (N75) faulty
Boost Pressure Sensor (G31) faulty
Turbo Charger stuck/faulty


Possible Solutions
Check Charge Pressure Control System
Perform Output Test (to check the Turbo Charger)
Perform Basic Setting (to check the Charge Pressure Control)
Perform Pressure Test to locate Leaks
Check/Replace Boost Pressure Control Valve (N75)
Check/Replace Boost Pressure Sensor (G31)
Check/Replace Turbo Charger

Thank you for copying and pasting the ross-tech wiki!

I was hoping for a slightly more insightful response from people who might have experienced the same.

Wtf   

Good luck Type R... Perhaps a Type R and Forum is your best place for help 

[Tortaruga]

This also happened to me after my remap. I did nothing about it and it has gone away. Sometimes the 'do nothing' option is best...have a smoke and relax.

[Type_R]

This also happened to me after my remap. I did nothing about it and it has gone away. Sometimes the 'do nothing' option is best...have a smoke and relax.

Thanks, unfortunately I have cleared the fault with VCDS more than one time and it does seem to come back, although on the 75 mile drive today it didn't, so it might be settling down.

Fab5Freddy & Saintsteve - thanks for the advice, I will know who to ignore when you post - trolls. All I said in my earlier post was that he had cut and paste the ross-tech wiki which is a fact. He could have said try this and then stated that he had the problem before and changed his N75 - if he had said that I would not have reacted the way I did.  For the record I have over 150 posts (which you can search through and most if not all actually at least attempt to help/answer a question). No surprise you guys have over 1000 posts when you post complete nonsense like in this thread. 

[fab5freddy]

 

I wasn't offering any advice, just stating a fact

93 thank you's for helping people out over the last couple of years. Believe what you want pal 

[Homer]

Type r- neither of these guys are trolls and have helped many people on this forum. It's a community and for the most part everyone gets along and learns from each other. Hopefully you can find a solution to your problem but I would advise not to get personal with members of the forum.

[edd666999]

This also happened to me after my remap. I did nothing about it and it has gone away. Sometimes the 'do nothing' option is best...have a smoke and relax.

Thanks, unfortunately I have cleared the fault with VCDS more than one time and it does seem to come back, although on the 75 mile drive today it didn't, so it might be settling down.

Fab5Freddy & Saintsteve - thanks for the advice, I will know who to ignore when you post - trolls. All I said in my earlier post was that he had cut and paste the ross-tech wiki which is a fact. He could have said try this and then stated that he had the problem before and changed his N75 - if he had said that I would not have reacted the way I did.  For the record I have over 150 posts (which you can search through and most if not all actually at least attempt to help/answer a question). No surprise you guys have over 1000 posts when you post complete nonsense like in this thread.