I can see four possible codes relating to P0615 in the service manual:
All have the same description “Starter relay circuit malfunction” and warning: “flashing push button start indicator light (amber)” but only one has a fail-safe, P0615:12:
- Inhibits switching the ignition ON (engine off or on).
- Inhibits the engine start.
I think the first step is to determine if the Starter Relay is the culprit, this video gives a suggestion for that:
Hopefully we can get you back on the road soon!