My car has developed a fault the codes that are in the first picture
When I clear the codes I get the second code straight away
1 of the codes is R/H height sensor
Does anyone know if the sensor would cause the other faults
Thanks
Cosmo





img]https://www.rrsport.co.uk/gallery/albums/userpics/20005/normal_924FD9BF-B912-442D-9C53-0D2D3DFD538D.jpeg[/img]

I think they are related , I had similar issue recently and replaced the faulty ride height sensor and then cleared the codes , all sorted

Thanks for the reply
Did you have to re calibrate the suspension after fitting the new sensor

No it was all okay

Thanks

New developments
I drove the car twice today and had a beep on startup with amber warning light suspension fault
I drove the car a third time had no bleep and amber warning light had gone out but after about 2 miles red suspension fault light came on and warning max speed 30mph then car suspension dropped to bottom
I turned of the car then restarted it and suspension raised with no warning lights
I’ve had it a couple of times where I’ve opened a rear door to put things in the car and suddenly the car suspension at the rear drops but raises when I start the car
I’ve read the codes and there all the same as above
After clearing the codes the off side rear suspension is fully raised
Does anyone know if these problems are due to the ride height sensor
I’ve had to order sensors so waiting for them to arrive
Thanks
Cosmo

The first code U0421-68 is simply a code telling you to check the Air suspension Control Module for faults. The one you need to check is C1A06-78. Have you checked to see if the height sensor has not just become disconnected for some reason? as there does appear to be few mechanical reason for this code as well as electrical.

Click image to enlarge

All the same things we had , Sensor was back order with no date when we required one . rear offside

I was lucky and sourced one via Ebay that done the job

If you do go for e-bay just remember there are two different one's, one for cars with CVD and one without.

LR023650 With CVD
LR023648 Without CVD

Cheers
Col

Did you try recalibrating the suspension? The main fault is the one for the right rear sensor saying it may be bad or out of calibration. You can swap the sensors side to side which will put them in a new range (2010+). You will have to recalibrate the suspension, but if a sensor is having issues holding a measurement due to wear, this can often resolve it. 2011 RRS HSE Luxury 3.0 TDV6 Fuji White on Ebony/Ivory
Born and raised in So Cal. Moved to the UK in 2018 for a few years. Now in Poland and looking at moving back to the UK.

Hardly worth the effort of swapping, for 50 quid you could get a pattern part.

Cheers
Col

Thanks for all the replies The new sensor will hopefully be in stock today I’ll change it and let you know what the results are

I changed both rear ride height sensors and problem sorted but what a job as the top bolt on both sensors were seized causing the captive nuts to rotate so had to cut them off 😫😫😫

Thanks to all for your help 👌

Great news
Yes I had to chop the same bolt on one of mine
Glad its sorted

Looks like I have a similar issue, code C1A06-1C, which is rear right height sensor.
Is it an easy job to do without access to a pit or ramp?
Secondly, I’m due to go off road next weekend, will it be OK, to wait until after I’ve been to do it? 2010 HSE TdV8 in Stornoway Grey.
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