Hello if I ask you because I feel lost with tjis one. My brother in law car. Haven't spend much time o0n it but. He brought the car with o2 sensor circuit , sensor is still on 0.48V.So we decided to replacxe the sensor -ok.After r4eplacement still the same. Checked by tester and on the sensor by scope. Add earth on the grey wire still the same. Any ideas?
Car has got lpg instalation fitted.