Nissan code
P0101: on a Nissan
How much to fix P0101 on a Nissan? Typically $120 to $390 for mass airflow sensor replacement, the most common fix. This is an estimate, not a quote.
P0101 means the airflow sensor reading makes no sense for what the engine is doing. On Nissans, a dirty sensor or a leak at the intake boot is the first stop. The code often shows up after a filter change.
General meaning of P0101: The mass airflow sensor measures how much air enters the engine so the computer can add the right amount of fuel. The number it reported does not match what the throttle position and engine speed say should be flowing, so either the sensor is wrong or the air path has an issue. See the full P0101 page.
Models to know about
| Model | Years | What to know |
|---|---|---|
| Altima | 2007 to 2018 | Airflow sensor is in the intake duct. |
| Sentra | 2007 to 2019 | Small car, easy access. |
| Rogue | 2008 to 2020 | Sensor sits near the airbox. |
| Versa | 2007 to 2019 | Basic intake. |
Common causes on a Nissan
- Dirty airflow sensor wire.
- Loose or cracked boot after the sensor.
- Wrong or oily air filter.
- Failing sensor.
NHTSA's public complaint file shows how owners describe this kind of trouble: the 2011 Nissan Altima has 242 complaints on file, and 23 of them use wording like airflow, MAF, P0101, stall; the 2012 Nissan Sentra has 180 complaints on file, and 24 of them use wording like airflow, MAF, P0101, stall. Complaints are owner reports, not proof of a cause.
Check this first
- Check that the sensor is plugged in and the filter box is latched.
- Clean the sensor only with MAF cleaner.
- Inspect the boot.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $70 | $250 |
| Labor: 0.5 to 0.8 hours × $110 to $150 an hour | $55 | $120 |
| Fees: shop supplies, disposal, diagnostics | $0 | $15 |
| Total, rounded | $120 | $390 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in the US, $27.13 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
A new Nissan sensor is the most expensive item here. Cleaning is cheap and worth trying first.
Other repairs that may be involved
| Repair | Typical range, US |
|---|---|
| Mass airflow sensor replacement | $120 to $390 |
| Vacuum leak repair | $90 to $460 |
Questions to ask the shop
- Did you clean it first?
- Is the air filter correct?
- Is the boot sealed?
Got a quote already? Check it against the range. Wondering if a recall touches this problem? See Nissan recalls by model or check a VIN.
P0101 on a Nissan: questions
Can I clean it myself?
Yes, with MAF cleaner only.
Will the car run badly?
It may stumble or idle rough.
How much does it cost to fix P0101 on a Nissan?
The most common fix, mass airflow sensor replacement, has a typical range of $120 to $390 across the US. That is an estimate built from parts prices and local labor wages, not a quote. Your model, engine and shop move it.
Sources
Written from public NHTSA data, owner-reported patterns and general repair knowledge, in our own words. Model lists are examples, not a full list, and patterns are not a diagnosis. Prices updated October 2026. Not a repair shop, estimates only.