I checked the code a long time ago, but the light would stay off for a long time. I can check the number again and post it. I did find the code on this forum. I decided to ask the question now because the light comes on every few days. I checked the ground from the module, and it looks good. As far as I know "ground fault" means that a power supply is grounding out somewhere. So I would have to trace the power supply to find the fault. Don't think I want to attempt that.