23209-0P010
DENSO 23209-0P010 High Pressure Fuel Injector Toyota Tacoma Highlander Lexus RX350 3.5L 2GR-FKS
23209-31090, 23209-39215, 297500-0120Slit-Nozzle Dual-Fan High-Atomization Direct Injection ValveSlit-Nozzle Dual-Fan Symmetrical Dispersion200 barVehicle & Engine Fitment
Technical Specifications
| Specification | Value |
|---|---|
| Injector Type | Denso High-Pressure Solenoid Direct Fuel Injector (DI) |
| Operating Rail PressureCore Spec | |
| Nozzle Spray GeometryCore Spec | |
| Coil Resistance Value | 1.7 to 2.1 Ohms at 20°C (Low Impedance Peak-and-Hold) |
| Fuel Rail Mounting Bolt Torque | 21 N·m |
| High Pressure Pipe Flare Nut Torque | 35 N·m |
| Tightening Torque | 35 N·m |
| Hold Down Torque | 21 N·m |
| Primary OEM Reference | 23209-0P010, 23209-31090, 23209-39215, 23209-31120 |
| Engine Emission Compliance | Euro 6 / LEV III / Tier 3 Bin 30 |
| Standard Industrial Warranty | 12 Months / Unlimited Mileage |
| Operating PressureCore Spec |
Matched High-Pressure Fuel Pump (Fuel Circuit Assembly)
Operates on the same high-pressure rail circuit. When troubleshooting low rail pressure (DTC P0087), verify pump volumetric delivery before replacing injectors.
Installation Tips
Tools needed: 10mm, 12mm, and 14mm sockets, extensions, and torque wrench, 17mm line flare nut wrench for direct fuel pipe connections, Special Service Tool (SST) for Teflon combustion seal installation and sizing, Slide hammer injector puller adapter for carbon-seized DI injectors, Clean engine oil or assembly lubricant for upper O-ring only
- Disconnect negative battery terminal; depressurize fuel system by removing fuel pump fuse and cranking engine for 5 seconds.
- Disconnect direct injector electrical wiring harness connectors.
- Remove upper intake manifold plenum assembly to access the direct injection fuel rails on cylinder bank 1 and bank 2.
- Disconnect high-pressure fuel feed lines from both direct fuel rails.
- Remove fuel rail retaining bolts; extract fuel rail and direct injectors from cylinder head carefully.
- Extract direct injectors from cylinder head pockets; clean injector bores of all carbon debris using non-abrasive brass tool.
- Replace lower white Teflon combustion chamber seal using the expander cone and resizing sleeve; keep Teflon dry.
- Replace upper rail O-rings and backup rings; apply light coat of clean engine oil to upper O-rings.
- Carefully insert direct injectors into cylinder head ports ensuring guide clips align properly.
- Position fuel rail over injectors; install rail mounting bolts and torque evenly to 21 N·m.
- Hand-start high-pressure fuel pipe union nuts; torque high-pressure fuel line nuts to 35 N·m.
- Reassemble intake manifold plenum with new gaskets; reconnect battery and cycle ignition on 3 times to inspect for fuel leaks.
- Teflon Seal Protection: The lower Teflon seal expands when heated in combustion chamber; never touch or grease the seal during installation to avoid combustion blowby.
- Rail Torque Symmetry: Tighten fuel rail bolts gradually in three equal passes across both cylinder banks to ensure uniform injector seating depth.
Frequently Asked Questions
What are the primary symptoms when 23209-0P010 fails?
Primary symptoms include extended cold engine cranking, severe hesitation under wide-open throttle, rough idle RPM fluctuation, and Diagnostic Trouble Codes P0087 (Fuel Rail/System Pressure Too Low), P0089 (Fuel Pressure Regulator Performance), or P0300 (Random/Multiple Cylinder Misfire).
What is the exact tightening torque for 23209-0P010?
The holding flange mounting torque is 21 N·m, and the high-pressure fuel pipe union nut must be torqued to 35 N·m.
Can I reuse the seals when replacing 23209-0P010?
No. All high-pressure fuel seals, including Viton O-rings and combustion chamber Teflon rings, are strictly single-use. Reusing compressed seals will cause pressurized fuel leaks or combustion blowby into the cylinder head.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.