I have a tiny company, produce and sell AC charge point in China. Recently I encoutered a problem. When customer used our AC charge point to charge Model 3 or Y, it usually stopped with warning: CP_a044 Unable to chrge service is required. Usually BMS_a063(Uable to charge sevice is required) and BMS_a174(Unable to charge diconnect and retry) appears at the same time.
My customer tried to use Tesla Gen 3 WC 2 times and it worked fine.
What is interesting is not all of Tesla cars reported such error, I guess about twentieth(1/20) of cars would report such error. One of my customer has Model X and 3. Model X works fine but Model 3 usually displays such error. So I think the charge point is OK.
Is anyone know the reason? Or if you know the mean of "CP_a044", that will help me a lot. I read car manual but there is no such explanation of "CP_a044".
Thanks very much!
My customer tried to use Tesla Gen 3 WC 2 times and it worked fine.
What is interesting is not all of Tesla cars reported such error, I guess about twentieth(1/20) of cars would report such error. One of my customer has Model X and 3. Model X works fine but Model 3 usually displays such error. So I think the charge point is OK.
Is anyone know the reason? Or if you know the mean of "CP_a044", that will help me a lot. I read car manual but there is no such explanation of "CP_a044".
Thanks very much!
