This forum can be a little slow, especially right now, so be patient for an answer. Also most people don't post if they don't know the answer, so look at the bright side, at least people aren't feeding you BS
That being said, I haven't seen that code specifically before. It seems pretty specific though, something is wrong with the circuit that tells your SES light to turn on or not. I don't know any common causes for it though. Wait around a little more and maybe someone can chime in.