Hi help please, I have just bought a 2001 rx300 with a propane conversion. The yellow engine warning light is lit along with the vsc light. The vehicle is genuine low mileage 83000 and has service history. Are the lights a consequence of using lpg? The dealer said it was an O2 sensor fault according to the fault code and he thought it was nothing to be concerned about justa factor using lpg.
Many thanks