Overdrive Light is flashing Car has 199k miles 2002 Ford Escape

Check for codes, by attaching a code reader to the data link connector.

Automatic transmissions are the weak link in all FWD vehicles. Every 30,000 miles, the transmission pan should be dropped and cleaned, transmission filter replaced, and refilled with Mercon V ATF. I only recommend using full-synthetic ATF; e.g. Mobil 1 Sythetic Multi-Vehicle or Amsoil Universal Synthetic ATF. This link may help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1873132

This has something to do with the transmission. The flashing light means that there is a code stored in the system related to transmission. Get the codes retrieved.