EGT #3 reads -85 when sitting at the hangar

[blueflyer]

I just rewired my panel and re-hooked everything back up as it should be. I have a D120. I am now seeing my EGT #3 read -85 while the rest of the EGT's read 95 (that's the temperature in my hangar so those are about right). Prior to panel update, the EGTs all were reading properly.

I looked at the probe and the connections that are firewall forward and all looks good up there. I feel like it may be a wiring issue since I just replaced my panel, but I have the Dynon CHT/EGT harness, and it just hooks to the D120. I tried blowing out (with my mouth) the female receptacle on the back of the D120 in case some FOD got in there. It did not help.

Any ideas what the issue could be? thank you.

 

[Dynon]

You can test the harness by shorting the two ends of the wires. You should get ambient temperature. If you do, it's downstream (the probe). If you don't, it's likely in the the harness.

 

[blueflyer]

will do. thanks for the guidance.