OBD-II code · Powertrain (generic)
P00BF Mass or Volume Air Flow B Circuit Range/Performance - Air Flow Too High
Mass or Volume Air Flow B Circuit Range/Performance - Air Flow Too High: the signal is implausible or outside the valid range.
Is it safe to drive with P00BF?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyMAF B reading drifted high
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Mass Air Flow Sensor B
Related codes
- P00BDMass or Volume Air Flow A Circuit Range/Performance - Air Flow Too High
- P00BCMass or Volume Air Flow A Circuit Range/Performance - Air Flow Too Low
- P00BEMass or Volume Air Flow B Circuit Range/Performance - Air Flow Too Low
- P00C0Turbocharger/Supercharger Bypass Valve B Control Circuit
- P00C1Turbocharger/Supercharger Bypass Valve B Control Circuit Low
- P00C2Turbocharger/Supercharger Bypass Valve B Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.