what do the P1292 and P1293 codes refer to when found in a 2005 Nissan Altima?

Question

engine runs fine, no stumbles or hesitations, code P1292 was logged, P1293 was active and comes back during a drive cycle. I can't find a Nissan specific reference for the code, and those numbers do nit appear in any of the Nissan Altima code lists. I did find a reference to having the ECU flashed to eliminate nonsense 1292 codes, thanks for your help.