kdinh37 Posted October 5, 2014 Share Posted October 5, 2014 Hello all, Someone please help, and show me how to fix these issues? My have had the check Engine light turn on for a while with these code below: P1130: A/F sensor circuit range/performance malfunction (bank 1 sensor 1) P1150: A/F sensor circuit range/performance malfunction (bank 2 sensor 1) P0171: System too lean (bank 1) with the following freeze frame data below. Fuel sys 1 = CL Fuel sys 2 = CL Calc load (%) = 47.8 ECT (deg F) = 174.2 STPT B1(%) = 19.5 LTPT B1(%) = 1.6 STPT B2(%) = 19.5 LTPT B2(%) = 3.1 Eng (RPM) = 1747 Veh speed (mph) = 24 IAT (deg F) = 100.4 So far, I replaced the Mass Air Flow sensor make by Denso 197-6020, and I bought it from Amazon for $76.00, but the check engine light still on. http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=maf%20sensor%202000%20lexus%20rx300 Also my car consumes too much gas, I got about 5-10 MPG city. Thank you for your help. Joseph- Quote Link to comment Share on other sites More sharing options...
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