Fuel and air code
P0107: Manifold pressure sensor reads low
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $0 | $0 |
| Labor: 0.5 to 1.5 hours × $125 to $175 an hour | $63 | $263 |
| Fees: shop supplies, disposal, diagnostics | $0 | $25 |
| Total, rounded | $60 | $290 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 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.
This is the range for the most common fix, diagnostic scan (check engine light). Which repair your car needs depends on a proper diagnosis.
The manifold absolute pressure sensor reads the pressure in the intake so the computer can work out engine load. The signal it sent is much lower than the engine could ever produce, which usually means a bad sensor, a break in the wiring, a missing ground or a vacuum hose that has come off.
- Safe to drive?
- Short trips only
- Most common cause
- Failed MAP sensor
Drive gently to a shop. The car may idle poorly or stall, and the computer may guess fuel mixture.
What you may notice
- Rough idle or stalling
- Black smoke or poor fuel economy
- Hesitation
- Check-engine light
Common causes, most likely first
- Failed MAP sensor
- Open or shorted wiring
- Disconnected vacuum hose
- Bad sensor ground
Check this first
Check that the sensor's vacuum hose, if it has one, is attached and not cracked, and look at the sensor plug for loose pins or corrosion. A bad ground can also cause this, so ask the shop to test that.
Other repairs that sometimes fix P0107
| Repair | Typical range, Boston |
|---|---|
| Vacuum leak repair | $100 to $530 |
| Mass airflow sensor replacement | $130 to $410 |
| CAN bus wiring repair | $190 to $1,275 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Massachusetts rules require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0107 questions
MAP or MAF, which is it?
They measure different things. A MAP sensor reads pressure in the intake, and a MAF sensor measures the volume of air entering. Both help work out engine load, and the code number names which one is at fault.
Can I replace it myself?
On many cars it is held by one bolt and a plug, so replacement is simple. Confirm the diagnosis first, since a bad ground or a vacuum hose can set the same code on a good sensor.
Why does it stall?
The computer needs this signal to set fuel, so a wrong value throws the mixture off. At idle, too little or too much fuel makes the engine unstable and it can stall.
How much does it cost to fix P0107?
The most common fix, diagnostic scan (check engine light), has a typical range of $60 to $290 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Related codes
- P0106: Manifold pressure sensor reading doesn't match
- P0108: Manifold pressure sensor signal too high
- P0102: Air flow sensor signal too low
More fuel and air codes
Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.