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Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0010-P0365)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Enabling Conditions

Typical Enabling Conditions

Monitor runs whenever following DTCs are not present None
Throttle position (TP sensor voltage) 0.2 to 2 V
Engine Running
Battery voltage 10.5 V or more
Engine coolant temperature 70°C (158°F) or more
IAT sensor circuit (P0110, P0112, P0113) OK
ECT sensor circuit (P0115, P0117, P0118) OK
CKP sensor circuit (P0335) OK
TP sensor circuit (P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135) OK
EVAP system pressure sensor circuit (P0450, P0452, P0453) OK
EVAP leak detection pump (P2401, P2402) OK
EVAP vent valve (P2419, P2420) OK