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DEM-0007 Hydraulic pressure faulty valve

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2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

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Metallo
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Year and Model: XC 70 AWD 2.5 - 2006
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DEM-0007 Hydraulic pressure faulty valve

Post by Metallo »

Hi guys,

I ran the diagnostics on my XC70 AWD and got this error:
Capture.png
As a result, the AWD does not work, I tested it myself today and I could only see the front wheels spinning.

VIDA says the possible root cause might be:

1) Damaged pressure sensor
2) Damaged feed pump
3) Too low oil volume in clutch
4) Internal leak in the clutch

Three years ago XeMODeX refurbished the DEM Module and I also replaced the differential oil pump.

The question is: where do I start from? I would exclude # 2
How do I check the oil volume in the clutch?
I could clean the pressure sensor...

Any other results I could get from VIDA that may help?

Thank you for your advice.

Alex
Polar 940 Turbo SW - 1997
XC 70 AWD 2.5 - 2005
XC 70 AWD 2.5 - 2006
JRL
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Re: DEM-0007 Hydraulic pressure faulty valve

Post by JRL »

DEM pressure sensor
Not too expensive and probably the issue in your case
2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

Contact info for purchases: jrl1194@aol.com
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vtl
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Re: DEM-0007 Hydraulic pressure faulty valve

Post by vtl »

Check Haldex oil level (add to the top then back out about 100...150 ml).

Pressure sensor can die too, as JRL said.
05 XC70, 16 XC60, 19 Tundra
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