Once in a while (as in months and especially after having been stationary in cold weather for a couple of days) I get the same symptoms.

I don't yet know the cause, but the workaround I have found that works every time is this: if the engine won't fire within the usual few cranks, I try it one more time. If it then won't start, I proceed to do this: with the ignition turned off, I unplug and reseat the ECU's connector. You don't need to take it out all the way, just push away the lock tab and pull and then pivot the connector away and then simply reseat it again.

I don't know why this works in my case, but it does. There are no bad or corroded contacts in either the male or female connectors. This action erases the fuel trims, so the ECU will need to relearn them again, and in the first 20 or 30 miles this can be felt.

Simply lifting the fuse for the ECU power supply momentarily alse erases the ECU, however, I have found it does not cure the no start condition in my case. Only unplugging and reseating the ECU connector does. So far - and that's probably been three to five times in the last year - each and every time I can then start and drive away as if nothing is wrong.

Try it, maybe it helps for you too...