Charge Speed Reduced, unplug and try again

[ACPark]

Currently charging at 240 V @ 48/48 A on firmware 2020.40.3
I have not experienced the reduced charging error again from the last reported time. This is only the second charge since.

 

[4point9]

In the end the firmware updates didn't resolve my 32 amp charging limit and Tesla Engineering diagnosed mine as needing a new PCS and HV PCS Fuse. Back from service and charging at 48 amps again! They did say the vast majority of these cases were resolved via firmware however.

 

[lUtriaNt]

wish i could charge at 32 amps (16amps/2kw for me) .....

 

[StanT]

Mine was also resolved by firmware update. Guess lucky me.

 

[rayray3]

I've been searching for answers and wanted to share the warning message and code I receive.
Code: PCS_a019
I take it PCS is Power Conversion System?
Luckily I can charge at 16/24A
I'm using the mobile charger on an older dryer plug 10-30.
I have a P3D delivered Sep 2018.

 

[brkaus]

I've been searching for answers and wanted to share the warning message and code I receive.
Code: PCS_a019
I take it PCS is Power Conversion System?
Luckily I can charge at 16/24A
I'm using the mobile charger on an older dryer plug 10-30.
I have a P3D delivered Sep 2018.

its likely that you have excessive voltage drop on the circuit. The car will look at the voltage before it starts pulling current and monitor it as it increases the current.

if the voltage drops significantly it indicates a weakness in the circuit. It could be a very long line and the resistance is spread out. Or it could be a bad connection which would create heat and possibly fire.

You can manually watch the voltage when it charges or even manually ramp up the current and watch the voltage to see if this is the problem.

I’m not sure how much voltage drop is allowed. Probably around 7% but just a guess.

 

[ucmndd]

I've been searching for answers and wanted to share the warning message and code I receive.
Code: PCS_a019
I take it PCS is Power Conversion System?
Luckily I can charge at 16/24A
I'm using the mobile charger on an older dryer plug 10-30.
I have a P3D delivered Sep 2018.

If the car detects a large voltage drop under load it reduces the amperage and throws this error. What voltage is your car reporting on the charging screen when this happens?