Have you PMed Motorandy123 yet? He wound up as one of the Yager "gurus" on this forum. He would either know or know where the answer is. When did they discontinue the Yager? I was thinking it was 2012. You might try an ECU reset and see if the code comes back. The reset, if I remember correctly, is key off, open throttle to stop, key on for 10 seconds, close throttle, key off. This should erase any codes. Then key back on and wait. Should go thru self-check and CELP light should remain out with key on.
Karl
You been waitin' a LONG time on this one! Sorry.