Toyota Camry Fuel Injector Replacement Cost in 2026

Toyota designed D-4S to capture the benefits of direct injection (better power and efficiency at higher loads) while keeping port injection (cleaner intake valves, better cold-start emissions). On the 2.5L A25A engine, the ECU switches between port and direct injection dynamically based on RPM, load, and engine temperature. At idle and low loads, port injection does most of the work. Under acceleration and at sustained higher loads, direct injection takes over.

For cost purposes this matters because most failures involve only one of the two injector sets. A clogged or weak port injector typically shows up as a cold-start rough idle that smooths out. A direct injector failure typically shows up as a misfire under load. Diagnosing which side is the problem lets the shop replace half the injectors instead of all of them. A good shop on a D-4S Camry will run a fuel balance test on both sets before quoting.

For a full deep-dive on D-4S read the dual injection cost guide, which covers the diagnostic decision tree in more detail.

On the 3.5L V6 Camry (both the older 2GR-FE and the newer 2GR-FKS), the engine sits transversely. The front bank of three cylinders is right against the radiator and relatively accessible; injectors can be reached after the front intake plenum comes off. The rear bank, however, sits against the firewall with the cowl and brake booster in the way. Removing rear-bank injectors requires taking off the upper intake manifold, the throttle body, and sometimes the EGR plumbing.

Mitchell ProDemand lists 3.2 hours for the V6 Camry front-bank job and 4.6 hours for front and rear together. At a $115 per hour independent rate that is the difference between $370 and $530 in labor. If only one rear-bank injector is failing, many shops recommend doing the full rear-bank set (three injectors) at the same time because the access is the same once the intake is off.

On the D-4S V6 (2GR-FKS), this gets even more involved because you also have to disconnect the high-pressure fuel line and depressurise the rail. Plan for 5 to 6 hours of labor on a full V6 D-4S rear-bank job.

P0300 (random misfire) on a port-injection Camry is most often a clogged spray pattern that responds to fuel-system cleaning. P0301 through P0306 specify which cylinder; if you see the same code repeatedly on the same cylinder, that cylinder is the problem. P0171 (lean) and P0172 (rich) point to a fuel-trim imbalance which can be injector, MAF sensor, or vacuum leak. Diagnose with a scan tool that reads live fuel-trim data before paying for parts.

On D-4S engines, P0087 (fuel rail pressure too low) is one to watch because it can point to a failing high-pressure fuel pump rather than injectors. Replacing the wrong component is the most common diagnostic mistake on D-4S cars.

On port-injection Camrys, start with a $10 to $15 bottle of fuel-system cleaner. Camry fuel systems respond well to additives and the failure rate of outright bad injectors is low compared to clogs. If that does not resolve the issue, a $50 to $100 professional pressurised cleaning at a shop is the next step before authorising replacement.

On D-4S engines, ask the shop to run a fuel-balance test on both port and direct injector sets before quoting. The diagnostic adds 0.3 to 0.5 hours of labor but can save you from replacing four direct injectors when only the port injectors had issues, or vice versa.

Toyota injectors are Denso OEM. Buying Denso direct (RockAuto, AutoZone) saves 25 to 40% over dealer prices with no quality difference. Read the full save money guide for more strategies.