Fuel and air code
P0087: Fuel pressure too low
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $150 | $500 |
| Labor: 2 to 3.5 hours × $125 to $175 an hour | $250 | $613 |
| Fees: shop supplies, disposal, diagnostics | $0 | $30 |
| Total, rounded | $400 | $1,150 |
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, fuel pump replacement. Which repair your car needs depends on a proper diagnosis.
The fuel rail feeds every injector, and a sensor on it reports the pressure to the computer. The reading is lower than the computer wants. With too little pressure, the injectors cannot deliver enough fuel, especially when you ask for more power on hills or when passing.
- Safe to drive?
- Short trips only
- Most common cause
- Weak fuel pump
Drive only if it runs well; low fuel pressure can cause stalling, so avoid highways and pull over if it stumbles.
What you may notice
- Stalling
- Hesitation
- Hard starting
- Loss of power under load
Common causes, most likely first
- Weak fuel pump
- Clogged fuel filter
- Failing pressure regulator
- Leaking injector or line
- Low fuel level or bad fuel
Check this first
Check that the tank has more than a quarter of fuel, since a low tank can starve a weak pump. Ask the shop to put a gauge on the rail and compare pressure at idle and when the engine is revved.
Other repairs that sometimes fix P0087
| Repair | Typical range, Boston |
|---|---|
| Fuel injector replacement (one injector) | $180 to $910 |
| Diagnostic scan (check engine light) | $60 to $290 |
| Mass airflow sensor replacement | $130 to $410 |
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).
P0087 questions
Can a clogged fuel filter cause this?
Yes. A clogged filter restricts flow, so the pump cannot reach the pressure the computer wants. On many cars the filter is part of the pump module in the tank, so the pump and filter get replaced together.
Is it dangerous?
A sudden stall at highway speed is the real danger, along with sluggish power when you merge. If the car hesitates or stumbles under load, avoid fast roads and have it checked soon.
Why does it only happen under load?
Demand for fuel is highest when you press the pedal hard. A tired pump can keep up at idle but cannot deliver enough volume under load, so the pressure sags only when you need power.
How much does it cost to fix P0087?
The most common fix, fuel pump replacement, has a typical range of $400 to $1,150 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
- P0191: Fuel rail pressure sensor reading off
- P0171: Engine getting too much air or too little fuel (bank 1)
- P0300: Random or multiple cylinder misfires
- P0299: Turbo not making enough boost
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.