Onboard charger (GHCA) AC charging failure
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
16 NHTSA complaints · 2025-02 → 2026-03
“The Grid to High Voltage Converter A (GHCA) is a critical, often failing, component in 2025+ Volvo EX90 and Polestar 3 electric vehicles that converts AC grid power to high-voltage DC for the battery has failed 5 times in my car with no fix from Volvo in the foreseeable future”
“On Saturday 6th December, I unplugged the car from the A/C charger after it had finished charging to 90% in my garage and there was a very loud bang heard from under the car”
“I have been in multiple situation where my car is unable to charge from my home charger, and the issue is always same which is the need of GHCA replacement. Right now, GHCA for EX90 is in national back order with unknown ETA”