P0100: Mass or Volume Air Flow Circuit Malfunction
2 vehicles · 1 makes · $10-$250 repair
Most Reported On
P0100 is an OBD-II diagnostic trouble code meaning “Mass or Volume Air Flow Circuit Malfunction.” This generic code means the PCM detected a problem in the mass air flow (MAF) sensor circuit. The MAF sensor measures how much air enters the engine so the computer can deliver the correct amount of fuel, and a circuit fault disrupts that measurement. The result can be poor performance, rough running, hesitation, or stalling, along with reduced fuel economy. This code is most commonly reported on 2007-2019 Nissan Versa, and 2007-2019 Nissan Sentra, with repair costs ranging from $10 to $250.
Common Causes
Typical Repair Cost
Based on 2 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0100, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
FAQ
What does P0100 mean?
P0100 stands for "Mass or Volume Air Flow Circuit Malfunction." This generic code means the PCM detected a problem in the mass air flow (MAF) sensor circuit. The MAF sensor measures how much air enters the engine so the computer can deliver the correct amount of fuel, and a circuit fault disrupts that measurement. The result can be poor performance, rough running, hesitation, or stalling, along with reduced fuel economy.
What are the most common causes of P0100?
The most common causes of P0100 are: Faulty or contaminated mass air flow sensor, Dirty MAF sensor element, Damaged wiring or connector at the MAF sensor, Vacuum or intake air leak, Dirty or restricted air filter, Loose or cracked intake ducting, Faulty PCM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0100?
Repair costs for P0100 range from $10 to $250, depending on the vehicle and root cause.
Which vehicles are affected by P0100?
Au7o has documented P0100 across 2 vehicle models from 1 manufacturers: Nissan.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.