Fuel Injector Replacement Cost (2026): One, Full Set, Cleaning, by Car

Replacing one fuel injector costs $250–$600 at a US independent shop in 2026, parts and labor; a full set runs $600–$1,400 on a port-injected four-cylinder and $1,000–$2,500 on a direct-injection engine. The price moves with the type of injection, how many cylinders, and whether the injectors sit on top of the engine or under the intake. Below: the price by job and by car, what the NHTSA data shows about injector codes, and how to make sure the injector is really the problem before you pay for one.

What it costs

Every figure in this table and on this page is a US independent shop, parts and labor, 2026 range, a writer estimate pending our mechanic reviewer. Shop labor runs about $90–$180 an hour; the coasts and dealers sit at the top. A direct-injection V6 or V8 set runs $1,500–$3,500, and diesel pickups sit well above that. Off-car ultrasonic cleaning with a flow test for a port-injected set is $250–$600 including removal. If the injectors test good and only the seals seep fuel, a reseal with new O-rings is $150–$450.

Cost by car

The complaint counts below are what NHTSA files under its broad fuel/propulsion system and engine categories for that model year. They cover pumps, stalling, oil use and much more, not injectors alone. We list them because these are the most-complained models in those categories, and they tell you how much owner data exists for your car. They do not mean the injectors on these models fail more.

The per-car ranges are for one injector and are writer estimates. For a full set, use the matching row in the cost table above.

The injector-specific data is the trouble codes. P0201, the injector circuit code for cylinder 1, appears in only 6 owner complaints filed with NHTSA, but 88 manufacturer technical service bulletins name it. P0202 shows the same pattern: 7 complaints, 72 bulletins. When bulletins outnumber complaints like that, the carmaker has often published a known fix, a harness routing or software change, so a bulletin check is worth doing before any part is ordered. The Chevrolet Malibu tops the P0201 list with 2 complaints. The lean code P0171 is more common, in 159 complaints and 251 bulletins, and the Ford Windstar alone accounts for 19; a lean code points at air leaks as often as injectors.

Signs you need it

• A misfire on one cylinder. Rough idle or a stumble, often with a P0301–P0308 code; see P0300 and rough idle.
• An injector circuit code. P0201, P0202, P0203 or P0204 name the cylinder. The fault can be the injector, its connector or the wiring.
• Lean codes on one or both banks. P0171 or P0174 can come from clogged injectors, but vacuum leaks and a dirty airflow sensor are more common.
• A raw fuel smell. An injector leaking at its seal or dripping into the cylinder; see car smells like gas.
• Sputtering, hesitation or a hard start. Especially a long crank after the car sits hot, which can mean an injector leaking down. More in car sputtering.
• Fuel economy dropped for no clear reason. A stuck-open or leaking injector wastes fuel.

Can you wait?

Yes, for a short while, if the light is steady and the car runs close to normal. A single weak injector does not damage the engine quickly, but get it tested within a week or two.

Short trips only with a noticeable misfire and a steady light. Unburned fuel is going into the exhaust, and the catalytic converter takes the hit.

No, stop driving if the check engine light is flashing, the engine shakes hard, or you smell fuel under the hood. A flashing light means a misfire severe enough to overheat the converter; see check engine light flashing. Fuel dripping onto a hot engine is a fire risk. Park it and tow it.

These codes exist because the law requires them. Federal rules (40 CFR 86.1806-17) require 2017 and later vehicles to carry an onboard diagnostic system that meets California’s 2013 OBD-II requirements, and to keep meeting them for the vehicle’s useful life. The injector circuit and misfire codes are that system telling you about a problem before it becomes a converter bill.

What drives the price

Port or direct injection. Port injectors sit in the intake and are cheaper parts. Direct-injection injectors fire into the cylinder at far higher pressure, cost more, and need new combustion seals and sometimes new high-pressure fuel lines each time they come out.

Where they sit. On many four-cylinders the rail is on top and an injector is an hour’s work. On transverse V6 engines the rear bank sits under the intake plenum, which adds hours and gaskets.

One or all. When one injector fails on a high-mileage engine, some shops suggest the full set. It saves repeat labor if the others are close behind, but it is a judgment call, not a rule. Ask for a balance or flow test on the rest before agreeing.

Remanufactured or new. Remanufactured injectors are the bottom of the parts range; new factory parts are the top. Some engines need the injector’s calibration code programmed into the engine computer.

The thing that turns it expensive. Replacing an injector when the fault was a chafed wire. A circuit code can be a $100–$250 connector or wiring repair, and a new injector will not clear it. If the misfire runs long enough to damage the converter, the bill jumps to the catalytic converter replacement cost range.

DIY or shop?

Doable at home on a port-injected four-cylinder with the rail on top. Relieve fuel pressure first, disconnect the battery, and use new O-rings lubricated with clean engine oil. Parts only, figure $80–$350 per injector.

Better left to a shop for direct injection, rear-bank V6 injectors, or anything needing the intake off. Direct injectors often need a puller, new seals fitted with a special tool, and exact torque on the lines.

What goes wrong: a pinched O-ring leaks fuel, a reused direct-injection seal leaks compression, a dropped injector clip lets the rail shift, and a missed calibration code causes a rough idle. Check for fuel leaks with the key on before starting. Fuel is the one thing you cannot get wrong here.

How to not overpay

• Get the cause confirmed first. Ask for a resistance test, a swap test on port injection, or a balance test before a new injector is quoted. Plugs and coils cause most misfires; see spark plug replacement cost and ignition coil replacement cost.
• Ask about bulletins. With 88 bulletins naming P0201 and 72 naming P0202, one may cover your engine.
• Check the wiring before the part. A connector repair is a fraction of an injector.
• Get it in writing. New or remanufactured, which injectors, seals and lines included, and the warranty on parts and labor.
• Get a second quote on a full set. Anything over $1,000 deserves one.
• Get a second read on the quote. Not sure it makes sense? Paste it into the AI mechanic chat with your car and code.