P0108 code

[davebb]

Originally Posted by Anubisxc70

P0108- Power Train Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

WHAT ON EARTH IS THAT??!!!!!
Thats the code i have.....
Many Thanks

is the car auto or manual,
Dave

[Anubisxc70]

Auto


icarsoft?

[davebb]

Hi icarsoft 906 , is a obd code reader for reading and resetting Volvos,
also the code you have maybe for the auto trans,
Dave

[ThomasG]

Sorry for being late on promise.
I had a quick lookie on general codes.
Are you any good with electrics? Voltmeter use, for example?
Sensors may be expensive so I'd check it before replacing it.

[davebb]

Hi that code is for the Manifold Air Pressure , MAP, sensor, your sensor is at the intercooler output,
If you use your obd2 reader/software, read the Manifold Air Pressure ,MAP, with the car switched on but not running, the reading you should get is the same as atmospheric pressure were you are, you can use one of the weather apps for that,
Then have the car running and as you rev up the car you
Should see the reading change,
If you can get a mityvac ,pressure pump with gauge,
And connect it to the sensor, you can test if the readings are the same, as obd2 and the pump gauge,
Say at 1bar of pressure, on the pump gauge, the obd2 reader will be showing 2bar ,as atmospheric pressure is at 1bar,
But 1st do the obd2 test with the car switched on but not running and see what it is showing,
Dave

[davebb]

Also the code could be a air leak ,look at all the turbo air pipes , intercooler, remove the tray from under the intercooler, and see if you can see any oil,
Remove the under tray from under the engine and look at the pipes from the turbo,
You could make or buy a leak tester, look on YouTube how to make smoke tester, vacuum/pressure leak tester,
Does the car smoke, if it does I would say the intercooler is leaking
Dave

[davebb]

Hi I just seen your other post that I replied to,
My turbo wisles real loud when its cold. It winds real loud, then as warms up it gets more silent..
Is this natural? Or......trouble ....
Many thanks ,
SO YOU DO HAVE A PRESSURE LEAK, PIPE OR INTERCOOLER,
Don't do so many posts, try and put them together, as it will make it easy to see what is going on,
Dave

[Anubisxc70]

You are right sorry for the posts.
So or i have bad tubes or a bad radiator....
once thing i notice is where the pressure hose for the gearbox gets inside the radiator is leaking water. not much but some drops.
The intercooloer on this volvos are water cooled?
So i might start to replace the pipes first. I dont see any leaks on my radiators. only that water thing on the high pressure from the gearbox
So i really have to look for boost leaks?

[davebb]

No the intercooler is only air not water,
There is a plastic tray under the intercooler,
Take that off and have a look for oil or misshaped cooler

[Anubisxc70]

i will try to do that tomorrow. SO what if i find oil?