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gazza1591 **
Age: 42 Zodiac: Joined: 04 May 2009 Posts: 62 Location: herefird
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Posted: Sat Apr 07, 2018 19:06 Post subject: Help with fault code |
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Hi all
After some advice on my 2008 3.2did, coming home yesterday and engine management light come on along with traction control light and truck went into limp mode, stopped started again traction lights goes out but engine management stays on so drive a little but hut ad soon as u booted it a little it then goes back into limp mode and traction light comes on, take it easy and traction light stays off but with engine management light on.
I had code red today and come up with P1299 Vgt system (low pressure)
Check all pips for splits and being loose and all seem OK
Had fault code cleared and done 30 miles in it and all seems OK again pushing it a little and no lights
Anyone had this code or know where to look for cause?
Cheers |
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Posted: Sat Apr 07, 2018 19:06 Post subject: Google Ads keep the POCUK free to join! |
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theron **
Joined: 31 Aug 2011 Posts: 50 Location: Warwick
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Posted: Sun Apr 08, 2018 15:22 Post subject: |
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Code No. P1299: Variable Geometry Turbocharger Control System Malfunction (low pressure)
Reason for code: Actual boost pressure is lower than target boost pressure by less than 6.7 kPa
If you search google for "TURBOCHARGER SUPERCHARGING PRESSURE CHECK <4M4>" then you'll find a workshop manual page about.
Unless you have a boost leak some kind (check intercooler hoses) then I suspect it's your MAP sensor. It's mounted on the firewall and connects via a small pipe to the first part of the inlet manifold. As crud builds up in the inlet manifold then this port to this pipe can get blocked and it stops the MAP sensor from detecting the manifold pressure. |
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gazza1591 **
Age: 42 Zodiac: Joined: 04 May 2009 Posts: 62 Location: herefird
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Posted: Sun Apr 08, 2018 15:44 Post subject: |
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Cheers for the reply
So is just a case if removing the inlet and cleaning it out? Anyone know of any guides to do this? |
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theron **
Joined: 31 Aug 2011 Posts: 50 Location: Warwick
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Posted: Sun Apr 08, 2018 22:42 Post subject: |
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Some videos on YouTube, search for "4M41 inlet manifold clean" |
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gazza1591 **
Age: 42 Zodiac: Joined: 04 May 2009 Posts: 62 Location: herefird
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Posted: Sun Apr 08, 2018 22:45 Post subject: |
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Cheers think I found the video earlier today its about 30 min long video doesn't look to complicated just messy |
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gazza1591 **
Age: 42 Zodiac: Joined: 04 May 2009 Posts: 62 Location: herefird
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Posted: Sat Apr 14, 2018 14:05 Post subject: |
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Hi all
Cleaned the intake out today and put it all back tougher, cleared all faults went for a drive and after fee mins same again, engine management light and traction light comes on, did notice when I turn the engine off it runs on for a few seconds not sure if this is anything? Read fault codes again and same one as above P1299 where do I go next then. |
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theron **
Joined: 31 Aug 2011 Posts: 50 Location: Warwick
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cornish baldy **
Age: 56 Zodiac: Joined: 07 Mar 2008 Posts: 67 Location: cornwall
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Posted: Sat Jun 26, 2021 18:19 Post subject: |
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Hi did you ever find out what was causing this issue, Ive got the same symptoms but showing different fault codes
U1120
P0089
Thanks |
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ALFONSO **
Age: 67 Zodiac: Joined: 20 Sep 2003 Posts: 74 Location: co durham
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Posted: Sun Jun 27, 2021 12:00 Post subject: manifold pressure valve |
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i had same problem turned out to be faulty pressure sensor common problem |
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cornish baldy **
Age: 56 Zodiac: Joined: 07 Mar 2008 Posts: 67 Location: cornwall
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Posted: Sun Jun 27, 2021 13:13 Post subject: |
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Do you mean the pressure sensor on the end of the fuel rail |
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ALFONSO **
Age: 67 Zodiac: Joined: 20 Sep 2003 Posts: 74 Location: co durham
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Posted: Fri Jul 09, 2021 10:19 Post subject: |
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no the manifold pressure sensor mounted on bulkhead next to diesel filter |
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