Billysiano

I just bought a 2002 RX300 with 140k. The car drives well with no knocking sound from the enginner. I was driving today when the CEL came on. I scanned and got a P0330 code. How easy is it to fix this issue? Aslo, the ABS and VSC lights were on when i bought the car. I completely drained the battery overnight thinking it will resolve the issue. it didnt. How do i fix those?
Does this mean my engine is knocking but i cannot hear it? If so, can a high octane fuel fix the problem?

Thanks

salimshah

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Salim