Those codes don't appear to be suspension-related. Did you retrieve them using a generic diagnostic tool or one that reads LR-specific codes?
If the normal height only message occurs after a couple of minutes then there's a good chance that the compressor is failing to fill the reservoir quickly enough so will soon get worse causing the suspension to lower to the bump-stops. If you have to drive without getting it sorted then I suggest that as soon as the vehicle levels after start-up that you remove the engine-bay 20A suspension system fuse to prevent lowering and the passenger compartment 5A suspension system fuse to stop regular warning messages which can get quite annoying.
A couple of the codes indicate an EGR problem so you might want to get the EGRs checked.
MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi
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