scott schmerge
Full Access Member
Well, after a day of rebuilding the center and rear valve blocks, I'm right back exactly where I was this morning. Same two error codes.
C1A13-64 Pressure does not decrease when venting gallery - Algorithm based failure - signal plausibility failure
C1A36-01 Exhaust valve - General failure information - general electric failure
After I installed the rebuilt rear valve block, I took the car off the jackstands and the whole thing was on the bumpstops, as it should be. But then I started the car to see the same error message. Cleared the code, let it sit for a bit, watched it as (thankfully) it went back up to at least access height, then immediately when I hit the button for it to go to normal height, the orange triangle returned.
It's got to be an electric issue. It's almost as if the ride-height button is a button that activates the dash warning light--it's that instant.
Looking at this old thread: https://www.landroverworld.org/threads/suspension-fault-c1a36-01.29216/, looks like the same problem I'm having (and the poster did the same thing I already did trying to chase the problem). His wound up being a worn wire. I have no idea how to even begin looking for something like that, so this thing might be mechanic bound. Hell, maybe even dealer bound, as I'm not sure I know an indie who can deep-diagnose an issue like this.
Man! That sucks. I’m sorry I steered you wrong here. Did you try a hard reset of the truck? I’m wondering if you’re chasing a ghost in the electrical system, or if it is really electrical. Did you check all suspension relays?