My 2018 Model 3 recently started experiencing issues during AC charging where Im only able to use 16A out of the 48A available from my Tesla mobile connector charger at home. The specific error warning and error Im seeing says PCS_a019 Power grid or vehicle issue limiting AC charging Unplug and retry/ Try different charging location. Before this started happening Ive been charging with the same charging setup at home since 2019 and have been getting 32A consistently.¨Ive tried the following options to diagnose the issue: 1. Ive unplug and replug mobile charger from the connector. (the end plug to the mobile charger), Ive also plug and unplug connector to the nema 14-50 receptacle. 1. The mobile connector exterior shows a constant flowing of green color on the TESLA letters outside the charger 2. I also separately own a second 2023 Model Y Performance, my Model Y is able to use the same Tesla mobile charger connector/receptacle at my home. It it getting AC charging at 32A 3. Ive also tried charging the 2018 Model 3 (w/ the issue) at another separate AC charging station from a friends house that can normally deliver 48A, but Im still also only getting 16A out of the possible 48A After sending the above to Tesla service center, they remotely diagnose and stated that it was an partial failure/issue with the ‘ Power Conversion System’ on the vehicle. However, Tesla mentions that is is not covered by their ‘HV Battery Warranty’ and only covered by their 4 year 50k miles Basica vehicle warranty. My particular vehicle has only 37k miles on the odometer but it exceeded the 4 year period so I’m out of warranty. However I found that my vehicle fits the criteria for this outstanding NHTSA bulletin notice (SB-18-16-011) [XXX] , which also specifically mentioned ‘Replace Reworked Power Conversion System’. My vehicle meets the criteria ( manufactured [XXX]) but Tesla refused to honor the bulletin. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)