stalling
I agree that there are some similarities, but perhaps also some important differences. As someone who has been through it with a 2001 Prius, I say let's put all we know on the table and see if better understanding results.
The analagous problem with the earlier model Prius is considered by technical service bulletin EG011-03. There may be low engine power output, failure to start, warning lights, and various stored trouble codes.
The most common fix there was replacement of the hybrid vehicle ECU, since in the old days it could not be reprogrammed. Warranteed in the US for 80k miles. In some instances, the fuel pump relay and or the fuel tank assembly were also replaced, and those were only free for 36k miles. California and the other "CARB states" got a break on the fuel tank if needed, because there the warranty was 70k miles.
I had this problem diagnosed and fixed for free in my 2001 Prius, needing only the HV ECU replaced. No problems since then.
As I understand the special service campaign 50P for the new model Prius, two computers are reprogrammed, and a cable connector to MG1 has waterproofing added to it. Nothing about fuel tank or fuel pump relay.
It seems to me that an important aspect of the problem is shared between both models, namely that if the gasoline engine does not start promptly, computer error codes are generated. Further, that part of the solution in both cases probably includes making the computer a bit more tolerant of a slower start. But as there are other important differences, I am not ready to consider them as completely the same thing.
Any other comments on similarities or differences?
DAS