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Home >> Lexus >> 2011 >> GS 450h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0351)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Procedure
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DTC P0101: Mass Air Flow Circuit Range / Performance Problem: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101) 
    1. Put the engine in inspection mode. Refer to INSPECTION MODE PROCEDURE .
    2. Connect the Techstream to the DLC3.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs.

      Result

      Display (DTC Output) Proceed to
      P0101 and other DTCs A
      P0101 B

      HINT: 

      If any DTCs other than P0101 are output, troubleshoot those DTCs first.

    B → REPLACE MASS AIR FLOW METER 

    A → GO TO DTC CHART