Have a 2002 XK8
Having trouble figuring out what is causing a check engine light with a restricted performance yellow light. Codes read a Bank 1 lean codes with a slow acceleration code. Something with the ECU or the computer itself?

Would love any advice.

Dr Jim

 

Post the actual codes you are getting, not whatever rubbish google has found.

Your ECU is reporting the fault, it isn't causing the fault.