E212 will most likely be the F1 fuse / 160 amp on the traction box under the armrest, if its still intact but looks burnt still change it as a burnt fuse can upset the CAN BUS system & flag up the E212 code.
Normally get this error code when the truck is repeadly abused by pushing stock along the floor.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.