Any ideas on solving the "2 Blink" Lionel Big Boy Smoke Stack element problem?

I have had my Big Boy since 2020, and recently the Main Smoke stopped working.  Now I'm getting the 2 blink cab light diagnostic code on page 43 of Big Boy Owners Manual and no smoke output from the stack. (the Whistle Steam still works) I live in Alaska, and would like to fix this myself is possible, but it appears from the manual "correction will require the locomotive to be returned to a local Factory Trained Authorized Lionel Service Station."

Is there anyway around this that would allow me to fix this myself and reset the smoke system?  The manual says, "Smoke related error can be reset a maximum of three times. On the third try, if the problem persists, the smoke unit will be shut down."

Any help of advice would be greatly appreciated to avoid mailing the engine out to Lionel for service to fix this problem.