It could be the truck. I could DCFC, but level 2 charging would always fault. Here is the thread of my experience and what module was replaced on the truck. https://www.f150lightningforum.com/forum/threads/slow-charging-with-autel-50a-fix-replace-sobdm.21241/
I hope this helps.
I was also charging right around 3 kW before the truck was fixed. Here's the info from the the paperwork the dealer gave me after the service was complete. It mentions code P0D67, which may help your dealer if they hook it up to an OBD2 module. I hope this helps them get to the bottom of your issue.
When I first tried to charge the truck on a level 2 charger, the truck faulted and the wrench icon appeared on the dash. When I tried it again, it faulted again, but no wrench. When I called the dealer, while on the phone with the service advisor, he was able to remotely see the codes the truck...
In case a similar issue happens to anyone else, here is an update and how the issue was resolved by Ford:
On 9/13, I had a service appointment at my local Ford dealer to troubleshoot the issue. They performed tests on the battery packs and the related systems and the truck was diagnosed to have...
Does the Lightning automatically charge to the highest available amps available from the charger or is there a setting on the truck to select the kW? Only getting a 3.7kW charge and trying to figure out why.
Autel 50A hardwired
24 Flash ER