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Home >> Lexus >> 2004 >> LS 430 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnosis >> DTC P0101: Mass Or Volume Air Flow Circuit Range/Performance Problem >> Inspection Procedure

Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions v a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0101) 

    Result: 

    Fig 1: DTC Output Result Chart
    G01409563Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    If any other codes besides P0101 are output, perform the troubleshooting for those codes first.

    1. B: REPLACE MAF meter 
    2. A: Go to next step. 

      GO TO RELEVANT DTC CHART (See  DIAGNOSTIC TROUBLE CODE CHART   )