As the title says, have a 2021 Wrangler 2.0l hybrid in the shop with MIL on & only one code of U016B " Lost Communication with Electric A/C Compressor Control Module" stored in the HCP module (Hybrid Control Processor). I cannot find any diagnostic tree to follow or any literature whatsoever on the code. Best I can do is verify PWR/GND & LIN integrity at the compressor without knowing what else to test. The customer also brought it in with the hybrid battery completely depleted (cluster shows <1%), and I can't seem to produce any charge with 20 minutes of regenerative braking. Anyone ever ran into this code? It can be cleared but comes back on after key cycle.
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