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Home >> Toyota >> 2007 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Control System) >> SFI System >> DTC P0101 Mass Air Flow Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present P0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0335 (CKP sensor)
P0340, P0341 (CMP sensor)

Case1: Mass airflow meter rationality (High voltage) 

ENGINE SPEED REFERENCE

Engine speed Less than 2,000 rpm
Engine coolant temperature 70°C (158°F)or more

Case2: Mass air flow meter rationality (Low voltage) 

ENGINE SPEED REFERENCE

Engine speed More than 300 rpm
Fuel cut OFF