I had an issue with my A/C compressor not wanting to turn on yesterday. I also noticed that I could not get the heater to turn on either. I checked fuses and they looked good. I use 'Leaf spy pro' to look at the DTC codes. I saw a few codes that I had the last time I had a 12v battery issue. I put the 12v battery on a charger and then cleared the DTCs. The codes all went away except the HVAC error. I tested the heater/ AC and again they would not trigger.
here is the DTC reading results.
I looked around the engine compartment hoping to see some issue that I could understand. No evidence of leaking hoses on the AC and no obvious loose cables. I usually maintain my own cars and only take to a mechanic when fancy tools are needed or a smarter set of eyes would see the issue. This one was becoming the latter.
As I started the mental process to be prepared to 'take it in' I thought I'd better unplug the heater switch incase they see it and get all confused about it. I did this and then cleared the DTC's again. This time they all cleared.. like so.
Now my A/C is working... yay. I wonder if some sequence of events occurred that nixed a DTC code that involved the Heater switch?
It was too dark for me to tackle putting the cable back in tonight, but I'll report back if the error returns after I do that. Just thought I'd share incase some of your ever have the same issue and have this mod.