Hey,
I am actually new to the world of Land rovers, i have just recently bought a 1999 P38a Autobiography with 90 000 miles on it. My rover is currently sitting on a coil conversion, the compressor is missing and the 55 KPH fault code is displayed on the dash. My question is, can I re-convert the system back to air bags, from what I can see the height sensors are still intact, the valve body under the hood with the lines attached is still there along with the ECU’s under the drivers seat. My guess is that who ever did the conversion was not a qualified tech.

After some searching I see that this could possibly be something that has never been done before but I am committed in doing it.

Any guidance is welcome, I plan on using Arnott Gen III bags.
Thanks for your time.
Jay

 

I am currently starting a project similar to yours, but unfortunately I was missing the compressor and valve block. I posted this question in the range rover subforum. The advice I got was to change the lines to eliminate any chance of junk being in the lines. Other than that, my main concern was anything that had to be cut to make the coils fit, but they didn't think so. I think that the fault code deal may be because you don't have the eas bypass module? Mine was bolted to the passengers seat frame. I had to remove the trim panel to find it.