2009 RX350
trouble code P0171&P0174
I used another vehicle's mass air flow sensor to replace my car's mass air flow sensor. And through the similar method I replace the B1S1&B2S1. but the long FT was still high. I have no idea about the problem.
I attach the "trouble code.jpg"、“700 rpm mass air flow.JPG”、“700 rpm short FT & long FT.JPG”、“1800 rpm mass air flow.JPG”、“1800 rpm short FT & long FT.JPG”.