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Home >> Lexus >> 2004 >> SC 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 when 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) 
    1. Read the DTC using the hand-held tester.

    Result: 

    Fig 1: Result Chart
    G01447449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. B: REPLACE MAF SENSOR 
    2. A: GO TO NEXT STEP. 

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