GregH
Well-known member
So 3 days ago my 2012 Leaf decided it just wasn't going to charge at home anymore. Not on the Voltec EVSE L2, Not on an EVSE Upgrade @ 240V, and not on the same unit at 120V. At work (208V) the EVSE upgrade works for L2 charging but not L1. I took it into Nissan and they did the P3227 upgrade and claimed my contacts were dirty so they cleaned it (sure, why not). The DTC pulled was B2840 On Board Charger - Component Internal Malfunction. Not surprising, the problem persists. Of course it charges at the AV L2 (208V) at the dealership so they think I'm nuts. Now that I've confirmed it fails on 120V I can at least reproduce that for them.. Right now LeafDD shows OBC reported line voltage and ampacity only if a Brusa is detected but I think I'm going to change it to show that info whenever plugged in. Oddly a Clipper Creek unit at work which seems to be 208+27 (from a 240:32 transformer).. ie 235V works sometimes and not other times..
Oh another interesting tidbit.. On L1 (120V) it ramps up to requesting 6A DC (2.0kW!) then shuts off with the fault.. In all other cases it ramps up charge and faults within a few seconds... opening the EVSE contactors first then opening the main contactors in the car and shutting down. No faults registered on the EVSE.
Oh another interesting tidbit.. On L1 (120V) it ramps up to requesting 6A DC (2.0kW!) then shuts off with the fault.. In all other cases it ramps up charge and faults within a few seconds... opening the EVSE contactors first then opening the main contactors in the car and shutting down. No faults registered on the EVSE.