P0100: How to Diagnose & Fix — Mass or Volume Air Flow Circuit Malfunction
3 vehicles · 2 makes · $10-$250 repair
How to diagnose and fix P0100: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Mazda CX-5 · 2013–2018
MAF sensor becomes contaminated with dirt or suffers water damage, providing incorrect air intake readings. Causes vehicle to enter "limp mode" with severe performance degradation.
Common Symptoms
- Loss of power, vehicle enters limp mode
- Engine hesitation and jerky acceleration
- Check engine light with codes P0100-P0104
- Erratic idling and misfires
- Vehicle may stall and not restart
How to Fix
Clean MAF sensor with CRC MAF cleaner (#05110) or replace sensor. Do not use brake cleaner or carburetor cleaner as they can damage the sensor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- CRC 05110 Mass Air Flow Sensor Cleaner, 11-ounce aerosolOEMCRC 05110
Clean a contaminated MAF sensing element after diagnosis Fitment/availability: Live direct product page identifies CRC 05110 MAF cleaner. Use only on a removed MAF according to the label, never substitute brake/carburetor cleaner, never …
- Genuine Mazda PE01-13-215 mass air flow sensorOEMMazda PE01-13-215
Confirm VIN and installed sensor number because the dealer catalog also co
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Owner tips & cautions
- TipTry cleaning first with proper MAF cleaner before replacing
- TipEnsure air filter is clean - dirty filter damages MAF
- WarningDo not over-oil K&N filters (oil contaminates MAF)
- TipDisconnect battery after cleaning to reset ECU
Sources for this issue (1)
Nissan Sentra · 2007–2019
The Sentra MAF sensor is prone to contamination and failure, causing driveability issues. Oil from aftermarket air filters (especially oiled cotton filters) or crankcase ventilation can coat the hot wire element, causing incorrect air flow readings. This leads to poor fuel mixture calculations, hesitation, and stalling. Even with stock air filters, the MAF sensor can fail due to age and heat cycling.
Common Symptoms
- Hesitation during acceleration
- Engine stalling at idle
- Poor fuel economy
- Check engine light with P0101 or P0102
- Rough idle
How to Fix
First attempt: Clean the MAF sensor with dedicated MAF sensor cleaner spray ($8-12). Do NOT use carburetor cleaner or brake cleaner as they can damage the sensor. If cleaning does not resolve the issue, replace the MAF sensor ($80-150 for aftermarket, $150-250 OEM). The sensor is located in the intake tube between the air filter and throttle body and takes 10 minutes to replace.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- CRC 05110 Mass Air Flow Sensor Cleaner 11 oz
Chemical cleaner, not a sensor and not vehicle-specific. Use only on a removed/cooled MAF element exactly as directed; never substitute carburetor or brake cleaner.
- Genuine Nissan MAF sensor 22680-7S000
Confirm VIN and connector; not B17.
- Genuine Nissan MRA8DE MAF sensor 22680-1MG0A
Confirm VIN/build date because 2015-2016 catalogs can overlap the 5RB0A branch.
- Genuine Nissan MAF sensor 22680-5RB0A
Confirm VIN/build date and connector.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Nissan Versa · 2007–2019
The Nissan Versa MAF sensor is prone to contamination and failure, particularly on the HR16DE 1.6L engine. The hot wire element becomes contaminated with oil vapors from the PCV system and dirt that passes through the air filter. This causes incorrect air flow readings, leading to poor engine performance, hesitation, and increased emissions. The issue often presents intermittently before becoming a constant problem.
Common Symptoms
- Hesitation on acceleration
- Rough idle
- Poor fuel economy
- Check engine light with P0101
- Engine stalling
How to Fix
Clean the MAF sensor with CRC MAF Sensor Cleaner spray ($8-12). If cleaning does not resolve the issue, replace the MAF sensor. Aftermarket sensors cost $50-100; OEM Nissan sensors cost $120-200. The sensor is located in the air intake tube and takes 5-10 minutes to replace with basic tools. Ensure the air filter is clean and properly seated after MAF service.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- CRC 05110 Mass Air Flow Sensor Cleaner 11 oz
Use only on the removed MAF element per label; do not use brake/carburetor cleaner or touch the element.
- Genuine Nissan early Versa MAF 22680-7S000
2007-2019 Versa catalog range across HR16DE/MR18DE, but later production may use 5RB0A; VIN/production-date confirmation required.
- Genuine Nissan later Versa MAF 22680-5RB0A
Confirm VIN because catalog overlap exists.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Find P0100 by make
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P0100 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
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 3 vehicle models from 2 manufacturers: Mazda, Nissan.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.