smoothee
Senior Member
- Joined
- Jun 6, 2012
- Posts
- 1,334
- Reaction score
- 703
- Location
- St. John's, NL
- Ram Year
- 2011
- Engine
- Hemi 5.7
Has anyone dealt with "B21A1-00 ecu reset/recovery occurred-" code before? When I hit a bump (which are plentiful around here) I lose my speedo/rpm, radio, fuel level, etc. Truck drives fine when this happens and usually comes back in a few seconds. Sounds like a loose connection somewhere, I've checked connections at the ECU. This had happened a couple of times over the past few years but I chalked it up to a bad battery, but yesterday it happened a dozen or more times. Battery is new. Figured I'd ask here before chasing the harness back further. 
