Fault Code:P0234

[pedro]

Hello again,ive got a turbo boost fault,something about high pressure.

the code is:P0234

does anyone know what the remedy or actual problem could be please.

help a brother out lol

[pedro]

ill add that ive just had my EGR valve changed aswell.

[pedro]

forgot too add its the 2.0 litre 16v diesel engine,RHK engine model.

[pedro]

ive done a bit of self help,and the comments are to take the turbo off and give it a clean.
am i thinking this is the only course of action?

[davidireland]

The variable vanes in the turbo are stuck in a high boost position.
You could have vacuum problems also. Check the vacuum circuit first.

[pedro]

cheers david.thanks.

is there anything on here showing a diagram of a 2.0 16v TD?

ive looked everywhere and cant see one

[boomerbarry]

Originally Posted by davidireland

The variable vanes in the turbo are stuck in a high boost position.
You could have vacuum problems also. Check the vacuum circuit first.

Hi, I am new to this site, I have a engine fault code 0246 on my peugeot 806.

Been losing power when going on long journeys, cannot rev past 3000 rpm. It goes back to normal after a few minutes.

not good when you are about to over take, anyone have any ideas please

Regards

Bazza

[risky1]

Originally Posted by boomerbarry

Hi, I am new to this site, I have a engine fault code 0246 on my peugeot 806.

Been losing power when going on long journeys, cannot rev past 3000 rpm. It goes back to normal after a few minutes.

not good when you are about to over take, anyone have any ideas please

Regards

Bazza

P0246 Turbo pressure regulation electrovalve control : Short-circuit to positive

The above fault basically says that the turbo control solenoid is faulty or there is wiring problem...first thing to do is swap egr solenoid with turbo control solenoid and see if the fault p0264 remains..if so then it has to be wiring or an engine ecu fault.
The turbo control solenoid looks like this.. Pressure converter, turbocharger Peugeot 407 Coupe (6C_) 2.0 HDi from Pierburg - 7.00612.01.0
You should find it bolted onto the bulkhead,the egr control solenoid is normally to the left of the turbo control solenoid on the 806's....

Btw...What engine,year is your 806..??
Ron.

[boomerbarry]

Many Thanks for your help

Regards

Bazza

[Captain Tuba]

Just to echo David Ireland's comment:

Check the vacuum circuit - my 806 was loosing power and going into limp home mode.

There was a tiny tear/hole in the rubber diaphragm that operates the pollution control butterfly valves (aka swirl control actuator).

The leak was enough to loose vacuum such that when the turbo was required there was not enough vacuum left to operate it.
Also on my 806 the cup at the end of the accuator rod had broken too.
I fixed it but still had the power loss until we took the thing apart and discovered the hole.

Took ages to diagnose as all the faults point to elctrical/turbo related problems.

HTH
C.T.