Advertise on fullfatrr.com »

Home > Technical (L322) > EAS Fault - 0x7A Reservoir Pressure rises when lifting
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
jamiej



Member Since: 01 Dec 2023
Location: Surrey
Posts: 59

United Kingdom 2003 Range Rover Vogue 4.4 V8 Adriatic Blue
EAS Fault - 0x7A Reservoir Pressure rises when lifting

Hi all,

My 2003 M62 L322 has a new fault. Yippee!

I have the Air Suspension warning, but apart from that, all seems well.

The fault first tripped when going on the motorway and the car tried to get into "Motorway mode" and lower itself.

The car sits quite happily (i.e. no sagging), but it is perhaps a little uneven (it may have always been, doesn't really bother me).

Anyway, the GapIID tool has shown the fault

0x7A Reservoir Pressure rises when lifting

... which google seems to have no answers for.

If it makes any difference, i also have a 0x10 Steering angle sensor watchdog error

So anyone have any ideas?

Be nice to have a clear dash, it used to be free of any errors Sad

Apart from that, all is well in the land of old L322s (as well as they can be!)

Many thanks all.

Post #714049 14th Mar 2025 6:13pm
View user's profile Send private message View poster's gallery Reply with quote
Gsxr1250dave



Member Since: 20 Oct 2018
Location: London
Posts: 987

England 

Have you drilled a hole in the filter on the air pump yet ? If not do it.

Post #714069 14th Mar 2025 9:47pm
View user's profile Send private message View poster's gallery Reply with quote
RogueRanger



Member Since: 03 Jan 2024
Location: Kent
Posts: 117

United Kingdom 2006 Range Rover Supercharged 4.2 SC V8 Java Black

That style of code seems to come and go all the time. I don’t think they are actually fault codes and that may be why you’re not finding anything on Google.

What is the exact message you’re seeing on the dash? Des

2005 (2006 MY) L322 4.2sc Java Black, 2010 facelift conversion
1965 Lenham Lemans GT 1310 , Gulf Racing blue, FIA spec and road legal
2018 F56 Mini JCW, Thunder Grey/Black, Mulgari St2 tuned, FMIC, short shifter and Eibach springs

Post #714079 15th Mar 2025 12:07am
View user's profile Send private message View poster's gallery Reply with quote
jamiej



Member Since: 01 Dec 2023
Location: Surrey
Posts: 59

United Kingdom 2003 Range Rover Vogue 4.4 V8 Adriatic Blue

Thank you.

The cone filter. Can I just whip that out or do I need to worry about the 100+ psi air pressure in the compressor.

The dash error is > AIR SUSP. INACTIVE < and the EAS won’t change its setting, although the light on the EAS control is illuminated and looks as it should.

Post #714142 15th Mar 2025 9:17pm
View user's profile Send private message View poster's gallery Reply with quote
Gsxr1250dave



Member Since: 20 Oct 2018
Location: London
Posts: 987

England 

Yes you can just remove the cone filter from the pump

Post #714144 15th Mar 2025 9:50pm
View user's profile Send private message View poster's gallery Reply with quote
dingg1



Member Since: 29 Jun 2013
Location: PORTUGAL
Posts: 1368

2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

Yeah, if you resort to drilling a hole in it, just remove it and throw it away, it basically the same thing 👍😎

Post #714149 15th Mar 2025 10:49pm
View user's profile Send private message View poster's gallery Reply with quote
Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8541

England 2014 Range Rover Autobiography SDV8 Loire Blue

jamiej wrote:
The dash error is > AIR SUSP. INACTIVE < and the EAS won’t change its setting, although the light on the EAS control is illuminated and looks as it should.


IIRC this is a "hard" fault, it will not clear when you have rectified the problem.

It will need a diagnostic tool to erase... Thumbs Up Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #714151 15th Mar 2025 11:52pm
View user's profile Send private message View poster's gallery Reply with quote
jamiej



Member Since: 01 Dec 2023
Location: Surrey
Posts: 59

United Kingdom 2003 Range Rover Vogue 4.4 V8 Adriatic Blue

Hmmm.

So I whipped the air compressor out and it’s a Wabco one. Unsure if that the original one or not but it’s very clean. I guess it lives in a nice clean space but it was very clean for something potentially 20 years old.

The exhaust looks to have already been removed Sad

I cleared the codes on my GapIID but the moment I started the car, the same Air Susp Inactive came back. Sad

Any other ideas?

Click image to enlarge


Click image to enlarge


Click image to enlarge


Click image to enlarge

Post #714324 18th Mar 2025 11:12am
View user's profile Send private message View poster's gallery Reply with quote
mrblonde



Member Since: 24 Jan 2012
Location: Cambs
Posts: 766

United Kingdom 2003 Range Rover Vogue Td6 Adriatic Blue

I too am having a headaches worth of EAS faults at the moment on my 2003 TD6 Big Cry so I feel your pain.

If you have a steering angle sensor fault, on your iiD go into ‘live values’ and make sure you’re getting a reading from the SAS, turn the wheel and see if the angle (degrees) updates.

I had a few previous EAS faults that traced back to a faulty SAS sensor, I’ve just replaced it and all the original suspension faults have gone. There are small metal contacts in the sensor that read its value, so the usual full lock left, full lock right to reset faults doesn’t work. Couple of YouTube videos explain it and how to change it, the guy is called GrooveOn I think.

Change the SAS sensor and see how you go, it’s best if you know a 3’9” midget with t-Rex arms to ask to change it, or a contortionist

SAS sensor is the same as in 5 series and X5’s I think, mine was about £65 on eBay

Post #714503 20th Mar 2025 5:12pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT + 1 Hour

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2025 Futuranet Ltd & Martin Lewis
fullfatrr.com RSS Feed - All Forums


Switch to Mobile site