Engine: D52447: - Help fault code ECM 6805

davew993 · Aug 22nd, 2011, 18:18

Hi can anyone help me. I have a 2005 D5 163ps xc90.

i am getting a fault with my car that sometimes when i tow a caravan up a hill and the cars speed slows to 54 mph the car kicks down and puts Engine service light on and goes into limp mode. i keep throttle in same position and after 30 sec to 1 min it clears fault and light goes off dash and it back to normal!!

i have changed rear engine pad, hoses to pads and sensors, govenor on front of head and sensor on air cleaner box that pipes go to and it still does it but only when towing.

each time it does it fault code ECM 6895 - boost pressure control intermitant fault is logged.

i am pulling what hair i have left out now lol

can anyone point me in direction of what poss could be wrong please.

thanks
Dave

GJB · Aug 22nd, 2011, 18:30

Try the fuel filter seems to come up quite often

davew993 · Aug 22nd, 2011, 18:39

Hi thanks for reply.

Did think about fuel filter but thought that would do it all the time not just when towing plus thought that might put up fuel pressure fault code not boost pressure!!

think i will try it though as it seems to be common issue.

outnumbered · Aug 22nd, 2011, 18:44

the list is not endless and there is light at the end of the tunnel.
check the following.
engine pads both front and rear blockl them off.
pipe to turbo from air box can close when under load if its soft it will proberbly need a new one.
intercooler is it split at the bottom.
what is your driving style like it could be the the vnt is sticking on the turbo to check this use a mittivac..
do a search on that code and you will find some interesting reading and fixes .
hope that helps.
http://www.volvoforums.org.uk/showth...hlight=ecm6805
mike

davew993 · Aug 22nd, 2011, 19:08

Thanks for your reply an link. I read your post on the link and it way over my head but i will show it to the guy who works on my car.

The air pipe to turbo do you mean the small one down back of engine or the one that fits onto air box then onto silver metal pipe?

Genghis · Aug 23rd, 2011, 20:01

Dave - sounds like you have the same issue a few of us have. See the Engine service light appears thread

davew993 · Aug 23rd, 2011, 20:15

Hi All,

I tried to contact Volvo UK tech help today regarding this issue a few of us are having but didnt get anywhere. Just got told take to Volvo dealer and they will contact tech support if needed.

I will be changing fuel filter tom and then testing next week towing caravan. I will then report if this cures problem for me or not.

If that does not cure fault i will then try replacing air intake pipes.

That will only then leave turbo and vac pump!!!

Oh what joy lol

outnumbered · Aug 23rd, 2011, 20:22

you can test the vnt by using a mitty vac to see if the arm moves smoothly on the turbo and is not sticking. to check whats coming from the vac pump.
http://www.volvoforums.org.uk/showthread.php?t=131487
mike

Genghis · Aug 24th, 2011, 08:10

Dave - if you see the other thread about Engine service light a few of us on there have the same problems. The garage I used already have been in contact with Volvo tech support but to no avail I'm afraid

davew993 · Sep 26th, 2011, 08:49

Hi all,

Fuel filter changed and it made a massive improvment to the drive of the car. The old one was very black when removed so dont think it had been changed for a while.

Car still did fault code once when towing so now changing Air intake hose this week.

Will let you know if hose fix fault.

Aug 22nd, 2011, 18:18	#1
davew993 New Member Last Online: Sep 26th, 2011 08:50 Join Date: May 2007 Location: Billericay	Help fault code ECM 6805 Hi can anyone help me. I have a 2005 D5 163ps xc90. i am getting a fault with my car that sometimes when i tow a caravan up a hill and the cars speed slows to 54 mph the car kicks down and puts Engine service light on and goes into limp mode. i keep throttle in same position and after 30 sec to 1 min it clears fault and light goes off dash and it back to normal!! i have changed rear engine pad, hoses to pads and sensors, govenor on front of head and sensor on air cleaner box that pipes go to and it still does it but only when towing. each time it does it fault code ECM 6895 - boost pressure control intermitant fault is logged. i am pulling what hair i have left out now lol can anyone point me in direction of what poss could be wrong please. thanks Dave

Aug 22nd, 2011, 18:44	#4
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	the list is not endless and there is light at the end of the tunnel. check the following. engine pads both front and rear blockl them off. pipe to turbo from air box can close when under load if its soft it will proberbly need a new one. intercooler is it split at the bottom. what is your driving style like it could be the the vnt is sticking on the turbo to check this use a mittivac.. do a search on that code and you will find some interesting reading and fixes . hope that helps. http://www.volvoforums.org.uk/showth...hlight=ecm6805 mike __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021 Last edited by outnumbered; Aug 22nd, 2011 at 18:47.

Aug 23rd, 2011, 20:22	#8
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	you can test the vnt by using a mitty vac to see if the arm moves smoothly on the turbo and is not sticking. to check whats coming from the vac pump. http://www.volvoforums.org.uk/showthread.php?t=131487 mike __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021

Aug 22nd, 2011, 18:30	#2
GJB Premier Member Last Online: Apr 22nd, 2024 15:54 Join Date: Dec 2004 Location: Cromer Norfolk	Try the fuel filter seems to come up quite often

Aug 22nd, 2011, 18:39	#3
davew993 New Member Last Online: Sep 26th, 2011 08:50 Join Date: May 2007 Location: Billericay	Hi thanks for reply. Did think about fuel filter but thought that would do it all the time not just when towing plus thought that might put up fuel pressure fault code not boost pressure!! think i will try it though as it seems to be common issue.

Aug 22nd, 2011, 19:08	#5
davew993 New Member Last Online: Sep 26th, 2011 08:50 Join Date: May 2007 Location: Billericay	Thanks for your reply an link. I read your post on the link and it way over my head but i will show it to the guy who works on my car. The air pipe to turbo do you mean the small one down back of engine or the one that fits onto air box then onto silver metal pipe?

Aug 23rd, 2011, 20:01	#6
Genghis Genghis Last Online: May 12th, 2013 20:05 Join Date: May 2006 Location: Surrey	Dave - sounds like you have the same issue a few of us have. See the Engine service light appears thread

Aug 23rd, 2011, 20:15	#7
davew993 New Member Last Online: Sep 26th, 2011 08:50 Join Date: May 2007 Location: Billericay	Hi All, I tried to contact Volvo UK tech help today regarding this issue a few of us are having but didnt get anywhere. Just got told take to Volvo dealer and they will contact tech support if needed. I will be changing fuel filter tom and then testing next week towing caravan. I will then report if this cures problem for me or not. If that does not cure fault i will then try replacing air intake pipes. That will only then leave turbo and vac pump!!! Oh what joy lol

Aug 24th, 2011, 08:10	#9
Genghis Genghis Last Online: May 12th, 2013 20:05 Join Date: May 2006 Location: Surrey	Dave - if you see the other thread about Engine service light a few of us on there have the same problems. The garage I used already have been in contact with Volvo tech support but to no avail I'm afraid

Sep 26th, 2011, 08:49	#10
davew993 New Member Last Online: Sep 26th, 2011 08:50 Join Date: May 2007 Location: Billericay	Hi all, Fuel filter changed and it made a massive improvment to the drive of the car. The old one was very black when removed so dont think it had been changed for a while. Car still did fault code once when towing so now changing Air intake hose this week. Will let you know if hose fix fault.

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