http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx
I just saw your other thread about this matter... After replacing the turbo did you check the spark plugs for fouling and replace them if needed? Also, if the former turbo was dumping too much oil a lot may have accumulated in the IC and piping which will need to be thoroughly flushed out or it may foul new plugs.