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DTC P0101 Mass Air Flow Circuit Range/Performance Problem: Description

Refer to DESCRIPTION  .

DTC DETECTION CONDITIONS AND TROUBLE AREAS

DTC No. DTC Detection Conditions Trouble Areas
P0101 Conditions (a), (b), (c), (d) and (e) continue for more than 10 seconds (2 trip detection logic):
  1. Engine running
  2. Engine coolant temperature 70°C (158°F) or higher
  3. Throttle Position (TP) sensor voltage 0.24 V or more
  4. Average engine load value ratio less than 0.80, or more than 1.23 (varies with estimated engine load)

    Average engine load value ratio = Average engine load based on MAF meter output / Average engine load estimated from driving conditions

  5. Average air-fuel ratio less than -20%, or more than 20%
  • Mass Air Flow (MAF) meter
  • Air induction system
  • PCV hose connections