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Any thoughts on how to troubleshoot - Charging slowed - Poor grid power quality

fjs21

Member
Jul 25, 2018
9
2
Buffalo
B6B639E8-CB6E-4388-9D13-ADEAAC520C44.jpeg


M3 2018 AWD connected to Tesla Wall Power both purchased in Sep 2018. Was working fine and charging at 48 A until yesterday when it was limited to 32 A.

Initially got different error message but following a power cycle of the wall connector and update to 2021.4.3 this is the new error. Tesla messages confirm car reports issue with incoming power.

Should I call the electrician that installed? What should they be looking for?
 

P-Lo801

Member
Apr 19, 2019
623
345
Sacramento, CA
You should be able to check your "notifications" in the software menu and get the exact error code. From there, Tesla will have a link you can click on to expand upon what the error code means.
 
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SMAlset

Well-Known Member
Mar 4, 2017
9,188
10,056
SF Bay Area
OP saw you are in Buffalo. With this cold weather could your utility be having issues maintaining power in the cold? Otherwise I would suspect a wiring connection issue (does come loose over time and might need tightening), that or possibly an equipment issue.

BTW noticed the bottom alert. I’ve had that one a few times when I “parked” my car while sitting in the parking lot of Starbucks in order to drink my drivethru coffee. Had pulled into the parking space (car stopped and stationary with “Hold”) leaving car On and didn’t put into Park.
 

UAnicka

Member
Aug 11, 2020
5
2
Ahwatukee
View attachment 636141

M3 2018 AWD connected to Tesla Wall Power both purchased in Sep 2018. Was working fine and charging at 48 A until yesterday when it was limited to 32 A.

Initially got different error message but following a power cycle of the wall connector and update to 2021.4.3 this is the new error. Tesla messages confirm car reports issue with incoming power.

Should I call the electrician that installed? What should they be looking for?
We also got the same error message, code PCS_a019 after the February update. Made appointment right away and Tesla diagnosed it fairly quickly on our M3P... faulty PCS!
Screen Shot 2021-03-28 at 10.01.36 AM.png
 

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