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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (W/ Canister Pump) - Diagnostic Codes (P0010-P011B) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [02/2017 - 05/2018] >> Description
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DTC P0101: Mass Air Flow Circuit Range / Performance Problem [02/2017 - 05/2018]: Description

Refer to DTC P0102.

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0101 Mass Air Flow Circuit Range / Performance Problem All of the following conditions continue for more than 10 seconds (2 trip detection logic):
(a) The engine is running.
(b) The engine coolant temperature is 70°C (158°F) or higher.
(c) The throttle position sensor voltage is 0.2 V or higher, and less than 2 V.
(d) Average engine load value ratio is less than 0.85, or higher than 1.25 (varies with estimated engine load).
Average engine load value ratio = Average engine load based on mass air flow meter output / Average engine load estimated from driving conditions
(e) Average air fuel ratio is less than -9%, or higher than 19%
  • Mass air flow meter
  • Intake system
  • PCV hose connections
Comes on DTC stored