I don't know if this little car has codes that go to that level of detail. When it happens, it acts like someone is intermittently turning off all spark. The check engine light has not come back on yet but that might be because once it starts happening the engine doesn't stay running very long. The check engine light it had when I first started working on it the other day was for the crankshaft sensor.
If you need a scan tool, let me know.