Powertrain
generic / SAE
P00BC
Mass or Volume Air Flow A Circuit Range/Performance - Air Flow Too Low
MAF sensor A reads air flow lower than physically expected for the operating point. Often contaminated MAF or large vacuum leak after the MAF.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / BC
Possible causes
- MAF element contaminated high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.3–2 h
- Component: mass air flow sensor
- Component: intake system
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012