Starts then revs up and dies

[Pannelbeater]

Good day i just wanted to know if you can help me. I have a problem with my Lexsus V8 3zz-fe vvt-i. It starts and thrn revs up until 1500 rpm and then dies. What can be the problem because i check the air temprature sensor and all the sensors working except the oxygen censors that connectted to the exhaust pype not working on the moment.

 

[gloverman]

Has the immobilizer been addressed? Is it in a stock vehicle or an engine swap? Are you able to access ecu data?