Hi all I am new to the forum. I have been trawling the web for answers to the following faults. I have a 56 plate D3 Tdv6 and have been having limp home mode problems. Some days it happens some days it doesn’t . I have a Gap iid tool and reset all codes but these are the offending ones that keep coming back when I have the problems and help will be most appreciated.
VIN:
L319 - Discovery 3 2007
Vehicle scanned on 04-01-2018 10:02
Using (null)
Engine TDV6
P0088-00 (2F) Fuel rail/system pressure - too high
Parking Brake
U0100-87 (FB) Lost communication with engine control module/powertrain control module 'A' - Bus signal/message failure - missing a message
( on 04-01-2018 10:02:20 at 381030 km )
Ventilation
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( on 04-01-2018 10:02:22 at 381030 km )
Last edited by Brian.Smith on 4th Jan 2018 4:59 pm. Edited 2 times in total
4th Jan 2018 12:10 pm
Discogaz
Member Since: 17 Mar 2014
Location: Bracknell
Posts: 1399
Try changing the fuel filter first.
Mine occasionally threw a hissy fit, especially when giving the old girl the beans and had similar issues, a new filter sorted it.
4th Jan 2018 2:48 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Thanks for the reply I will give it a try
4th Jan 2018 2:50 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
Re: Fault code help
Brian.Smith wrote:
Engine TDV6
P0088-00 (2F) Fuel rail/system pressure - too high
Parking Brake
That's a cause for concern as the rail pressure is controlled by the PCV on the high pressure pump. I would switch to live data values under TDV6 and graph RPM, Fuel Rail Pressure, Pressue Control and Voume Contol while attempting to recreate the fault.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
4th Jan 2018 3:47 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Thanks for your reply I checked the live values and it is showing high although the injector pressures are ok. It’s also should be said that other faults are jumping up like interior light body control etc and I just noticed battery is only showing 11.8 volts when sitting and 14.8 when running. Those values you mentioned and I’m a novice to the gap tool I can see them how do I save what I am seeing
4th Jan 2018 4:26 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
There's a record button that will log the values. Alternatively take a screenshot of the graph when the fault occurs.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
4th Jan 2018 4:53 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Ah red dot that figures I’m not the brightest
4th Jan 2018 4:53 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Re: Fault code help
Allan_T wrote:
Brian.Smith wrote:
Engine TDV6
P0088-00 (2F) Fuel rail/system pressure - too high
Parking Brake
That's a cause for concern as the rail pressure is controlled by the PCV on the high pressure pump. I would switch to live data values under TDV6 and graph RPM, Fuel Rail Pressure, Pressue Control and Voume Contol while attempting to recreate the fault.
Hi I hope I’ve done this correctly
5th Jan 2018 11:13 am
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
This is just running with fault logged running on idle
5th Jan 2018 11:16 am
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
Clear the fault and then set the IID to record the values again during a road test. The aim is to capture the event that sets the fault code. Assuming the fault doesn't appear on startup? Do you recall the operating conditions when the fault typically occurs?
The rail pressure sensor or its wiring could be the culprit, so hopefully the serial data log from the IID will show an anomaly.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
5th Jan 2018 12:14 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Well it comes on in the morning 10 seconds after start up if I let the engine warm it can drive ok but will entually trigger but I will set it up and do a road test do you think the fuel pressure is high
5th Jan 2018 12:36 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
This is a known good capture during a cold start. Rail pressure reaches 34,700 kPa before dropping to normal figures for a slightly elevated idle speed.
Click image to enlarge
GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
5th Jan 2018 9:57 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
your graph looks so much smoother and my fuel pressure peaks a lot higher but then drops
5th Jan 2018 10:39 pm
Brian.Smith
Member Since: 04 Jan 2018
Location: UK
Posts: 11
Hi I had a go at the road test but the fault was coming on very quickly it seems to be worse in the cold could not get a decent long run withought the fault coming on
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... All LED interiors lights, DRLs, Spare Wheel protector.
