Can't help with the specific code, but...
Kango wrote:Also... does disconnecting the negative for 30 minutes turn the SES light off?
No, not according to Nissanhelp.com - they say 24 hours! Apparently because the system has built-in power retention that takes that long to fade. Guess I'll never reset it as my car never sees 24 hours rest!
My SES went on the other day. Understanding that it is often related to the gas cap, I removed it, then re-tightened it. It took 2 days (about 5 trips) but it reset and has not come back on. The cap wasn't loose in the first place though.... so I'm still none the wiser.