The only reason I could guess it would not start would have to be a dead VP.
1693 code is the one I got when my VP was dieing, but its a companion code, so it can really be anything.
If the engine turns over when you turn the key, the only problem left can be fuel. Either injectors (almost all would have to be bad) or the VP, the latter is the likely culpret.
-R. J.