1997 Toyota RAV4 Downstream O2 Sensor Reading Abnormal? Flat Line at 0.070 - Is This Normal or a Fault?

Model: Unknown Fault Code: P0136 Posted: 2023-06-25 11:40

I'm preparing my 1997 Toyota RAV4 for an emissions test and it usually passes without issues. Currently, the vehicle shows no diagnostic trouble codes. Using my BlueDriver scan tool, I've observed that the upstream O2 sensor is functioning normally—showing quick oscillations between 0.100 and 0.80