OBD-II code · Powertrain (generic)
P0102 Mass or Volume Air Flow Circuit Low Input
The MAF sensor reports an air flow value below the plausible minimum for current engine speed and load. The ECU substitutes a calculated load value while the fault is active.
Is it safe to drive with P0102?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyMAF sensor failed
- PossibleMAF connector loose or disconnected
- Less likelySignal wire shorted to ground
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 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, Intake Duct
Related codes
- P00FFBody Control Module Requested MIL Illumination
- P0100Mass or Volume Air Flow Circuit Malfunction
- P0101Mass or Volume Air Flow Circuit Range/Performance
- P0103Mass or Volume Air Flow Circuit High Input
- P0104Mass or Volume Air Flow Circuit Intermittent
- P0105Manifold Absolute Pressure / Barometric Pressure Circuit Malfunction
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.