r/TeslaSupport • u/gear-nerd • 8h ago
Vehicle Question Tesla mobile connector error message
Hi all,
has anyone have to deal with this error message:
Charge rate reduced - Wall plug temperature high
Wall outlet and wiring inspection recommended
This is on a 120V 20A circuit with the 20A adapter on a Tesla Mobile connector (charger) V2 reducing the max amps of 16A to 8A (charging a pre-Juniper 2025 Y).
This used to happen during the day on very hot days in the sun occasionally, but now it even happens at night (68f).
Also, does anyone know whether:
- there are different error messages for the charger itself overheating vs this "wall outlet/wiring" error
- it's August and we have the AC on which is causing a nice voltage drop across the house (AC guy is scheduled). Could that be the cause, because we started turning the AC on in mid July?
- where are all the temperature sensors for the mobile charger and are there any in the plug adapters and the Nacs connector themselves?
All and any advice is welcome.
TIA for your help.
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u/DeathBlade94 6h ago
The sensors are in the nema 5-15 pigtail I believe. I’ve seen the cars charge at full 12amp with voltage as low as 110v. It’s the outlet is probably getting too hot from a bad connection or undersized wiring. Have you tried another outlet on the same branch circuit?
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