My obdII gives me a manufacturer controlled dtc b1000 on my 2014 Optima EX. I found too many references online. Some say air some say its fuel. Im wondering if this anything to do with the rpm issue during idling and what part(s) might be the cause.
Got to admit, you've got me on this one. I looked it up and as stated, all over the map, and I also see b1000 codes with a 2 digit suffix that details problem area.
Hate to say this, check all connections at the ecu, then just disconnect the battery cable for a few minutes to try a reset, but write down saved items first.