Please can anybody give some advice to a newby here (am not a new RRS owner but new to the site).

I have just had a rear airbag replaced by an indy garage after having a yellow suspension warning. After refitting and recalibrating, all fault codes were cleared except one: U0434 Invalid Data Received From Dynamic Response Module.

I have just got the car back and the garage man says fault may clear after giving the car a good run, which I will try. However, does anybody have any advice on what the problem may be and how to fix it?

Many thanks

http://www.rrsport.co.uk/forum/topic29759.html

might shed some light, but the op of the thread found it was the Active ROLL module

Thanks Nick but not sure that it helps, as I cannot clear the code in order to try raising and lowering suspension.

Ian

Hi Harryp I'm new here too but not new to sports either. What diagnostics scanner have they used on it as it would be 7 digit fault code if it was SDD/IDS.You have an issue somewhere as invalid data codes usually clear with no problem if the fault has been rectified.
Was the air spring gone in the first place or was it changed due to a fault code I have seen a few sports /D3s where the height sensor wiring has corroded at the plug causing invalid data faults and the yellow light.
Do you still have the yellow light on?
Regards
Matt

Thanks Matt. Not sure what diagnostic scanner they used (also not sure what SDD/IDS means - please excuse my ignorance), but thought U0434 was a valid code.

Yes the yellow light is still on. How do I find/check the height sensor wiring/plug?

Thanks
Ian

You mentioned that they did a recalibration why, if they just changed the bag as there is no need to do it, you get this fault if the calibration is out of limits as well.. Look at your 4x4 screen and check all the height sensors to see if one is showing any faults..
Also measure from the top of wheel arch to the center of the wheel on each corner and check the heights are ok Front 461 + - 10mm Rear 465 = - 10mm

Flack

Hi Ian SDD is symptom driven diagnostics and what the dealerships use.IDS is the legacy version of it that was used before SDD in dealerships.
Your code is a valid OBD code but not a specific code to the RRS it's like a watered down version of the code you would get from dealer level equipment.

Hi Ian
You need to remove the wheels you will see little plastic arms attached to the suspension upper arms follow them and you will see a little black box with a pivot for the arm with a wiring plug on top of it that's the height sensor check the wiring where it goes into the connector check for green dust if you see any the wiring has rotted.
Most I have seen are Offside rear wheel sensor
If you have active roll bars check the fluid level in the resevoir under the bonnet it has a yellow lid and is at the front driver side it has a picture similar to the yellow light on it if this is low it can cause the light.
if it's empty prepare to part with some cash as it will be expensive to rectify if the roll bar seals are gone

It sounds like you may need to get it plugged in by a LR specialist or the dealer as "drive it a bit it may clear" doesn't sound like they know these cars you can spend a lot of money guessing on these cars.
Was your air spring replaced because it was leaking or was that the diagnosis for the yellow light?
Regards
Matt

Thanks Flack. 4x4 screen shows all ok and measurements look ok too.

Thanks Matt. Active roll reservoir looks ok and within min and max levels. I will need to get the wheels off to check the sensors. How easy is this to fix if they have corroded/is it a dealer job?

Re airbag replacement - the yellow light was on and the guy at the garage ran a diagnostic but was not 100% sure of the problem, so got the car up on a ramp where he saw the rear nearside airbag had "popped" in his words. This said, the car was driving ok before the airbag was replaced and looked level on all corners.

I was hoping by replacing the airbag that all would be well, as I really wanted to avoid going to the main dealer and spending more than is necessary. But maybe its going to be a necessary evil.

Hi Ian If it is the wiring the repair kit is available from the dealers it consists of a new plug with about a foot of wire attached so it's basically a case of cutting the old plug off and solder the corresponding wires together so not the most technical job just ensure you insulate the wiring well to keep the wet out.I will post up the part number in the morning as I have one at work

If your air bag had gone I would expect to see that corner on the floor when left for a while.I think you have had an air spring fitted for nothing unfortunately.

You don't necessarily need a dealer just someone with the right diagnostics kit and knowledge I would ask on here for advice on a local lr specialist in your area as they will be able to correctly diagnose it or maybe even a forum member who does have Landrover specific diagnostics in your area.

Using an independent garage can save you a load of money but if they don't know the RRS it can soon end up cheaper to use the dealer as I'm sure a few people have found out.

Depending upon what diagnostics they have, it may as simple as they could not clear the codes in the DRM, which is causing the air suspension light to come on with the lost comms error.

It may be something completely different, but I have had these issues in the past

Thanks again Matt and thanks Mikey.

I have a bit of a stupid question to ask before I proceed to take all the wheels off - would the 4x4 screen show anything if a sensor is not working?

Finally, can anybody recommend an indy garage near Eggborough?

Many thanks
Ian

Doesn't the 4x4 info screen show a red bar over a wheel with a faulty height sensor? Think this is correct but I've not had that problem (yet).

A Land Rover specific diagnostic tool should find a code if there is a height sensor problem. Height sensors can generate four fault codes i.e. Left front C1A031, C1A0326, C1A0329 or C1A0392. For the other height sensors only the 5th digit is different. 2008 MY Java Black TDV8 HSE

Thanks Paddi, fortunately I do not have any red lines over the wheels so hopefully sensors are ok.

Ian

Hi

Im gonna try askin this here. So I've got the same fault code "U0434 Invalid Data Received From Dynamic Response Module. " about two times per year. It usually happens when I drive highway speeds only.

Sometimes it feels kinda dangerous when this happens because the whole right side of the car drops down. It will eventually rise up but the fault is on untill I restart the car.

I have recently changed rear shocks and all valve blocks. After those the car hasnt dropped over night so it helped. But this right-side dropping is still a mystery? The display says "Vehicle lean when cornering" when this happened. After a restart everything works fine.

I havent done anything to height sensors. Could those cause this? I noticed a 12mm difference on the levels with a after market diagnose tool but cant really rely on that I guess?


-Toni