0445110685
BOSCH 0445110685 VW Audi 2.0 TDI Injector - 03L130855C
03L130855C, 03L130855CX, 03L130277J, 03L130277QF00VC01502DLLA162P21601800 bar peak rail pressureProduct Overview
The BOSCH 0445110685 is a 110-series solenoid common rail injector from the CRI2-16 family, engineered for VW / Audi 2.0L TDI (EA189) passenger-car applications. It does NOT fit the 2.7L EA270 or 3.0L EA897 V6 TDI engines - those take a different injector family. The 1800 bar peak rail pressure and DLLA162P2160 nozzle (internal Bosch code 0433172160) enable stable pilot + main injection sequences. The F00VC01502 control valve meters fuel via electromagnetic solenoid actuation. OEM codes 03L130855C / 03L130855CX / 03L130277J / 03L130277Q map to this Bosch code 0 445 110 685. Aftermarket replacements require IMA coding via VCDS / ODIS - skip the coding and you will get P2146 / P2149 fault codes and rough idle.
Always verify the OE reference (03L130855C / 03L130277J / 03L130277Q) on your existing injector body before ordering. 0445110685 features the F00VC01502 control valve and DLLA162P2160 nozzle assembly (0433172160), sharing the CRI2-16 platform with sister SKUs 0445110368, 0445110369, 0445110429, 0445110646, 0445110647. Each carries a unique IMA calibration - NOT interchangeable without ECU re-coding.
Vehicle & Engine Fitment
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 0445110685 |
| Brand | BOSCH |
| Product Type | Common Rail Diesel Injector |
| Nozzle CodeCore Spec | |
| Nozzle Part NumberCore Spec | |
| Engine Family | EA189 (2.0L TDI, 1968 cc) |
| Control ValveCore Spec | |
| Injection System | Common Rail Diesel (CRI2-16) |
| Operating PressureCore Spec | |
| Emission Standard | Euro 5 |
| Material | High-speed Steel |
| Net Weight | 540 g |
| Exchange Number | 0986435166 / 0986435167 |
| Warranty | 12 months |
| Sister SKUs | 0445110368 / 0445110369 / 0445110429 / 0445110646 / 0445110647 |
Installation Tips
- CRITICAL torque-to-yield procedure (verified OE spec): Hold-down bolt = 8 N·m + 180° turn - these are stretch bolts, replace every removal (OE part WHT004739). Never re-use a stretched bolt.
- Depressurise the fuel system and disconnect the battery before removal.
- Clean the injector bore with a reamer; replace all copper washers and O-rings with new parts - dirt on old seals is the primary cause of new injector failure.
- Torque the hold-down bolts to 8 N·m, then rotate a further 180°- do NOT over-torque or the bolt will snap off in the head (known failure mode on EA189).
- After installation, prime the low-pressure fuel circuit by pumping the lift pump manually.
- Mandatory IMA coding via OEM diagnostic tool (VCDS / ODIS / Autel MaxiSys). Replace all 4 injectors as a set and code the IMA block once - skip coding and you will get P2146 / P2149 within 50 km.
- Confirm the 16-pin electrical connector - CRI2-16 must not be cross-mated with CRI1-14 (5-pin) or CRI3-20 (20-pin); verify the keying matches the wiring harness.
- After coding, clear all DTCs and run a road test under load to verify cylinder balance and DPF regeneration.
Frequently Asked Questions
Will 0445110685 fit a 2009 Audi A4 2.0 TDI (EA189)?
Yes - the 0445110685 is a confirmed fitment on the Audi A4 2.0 TDI from 2009 through 2015 (EA189 platform, engine codes CBDB / CFFA / CFHD / CAGA / CAHA). Verify the OEM code stamped on your failed injector - if it reads 03L130855C, 03L130855CX, 03L130277J, or 03L130277Q, you have the right injector. VW / Audi part numbers from V03L130855CX are also equivalent.
What is the difference between 0445110685 and 0445110646?
Same body and same CRI2-16 system, different IMA calibration code stamped on the label. 0445110646 is the lower-flow / earlier variant typically used on the 88-105 kW (120-143 HP) A3 / A4 2.0 TDI. 0445110685 is the higher-flow variant for the 125-130 kW (170-177 HP) 2.0 TDI applications (A4 / A5 / Q5 with CAHA, Golf / Passat with CBBB / CFGB). The sister codes 0445110368 / 0369 / 0429 / 0646 / 0685 are all in the same body family - verify the stamped Bosch code and use the exact match.
What control valve and nozzle are on 0445110685 and how do I verify them?
Control valve: F00VC01502 (solenoid type, compatible with F00VC01517). Internal nozzle: DLLA162P2160 (Bosch order number 0433172160), a multi-hole design engineered for 1800 bar peak pressure. To verify: remove the injector and check the laser-etched markings on the solenoid body. If you see a different control valve code, the injector has been previously serviced with non-matching components.
Can I use 0445110685 on a 1.6L TDI (EA111) or a 1.4L TDI?
No - the 1.6L TDI EA111 (engine code CAYC) and the 1.4L TDI use a different Bosch 110-series injector with a smaller nozzle body and a different control valve shim. The 0445110685 is sized for the 2.0L EA189 platform only. Do not be misled by sellers who claim cross-fitment - the IMA calibration block is engine-platform specific.
What are the symptoms of a failing 0445110685 injector on a VW / Audi 2.0 TDI?
Common symptoms: fault code P2146 (injector Group A circuit/open), P2149 (cylinder 4 open circuit), rough idle, misfire on cold start, white or black smoke, loss of power, and reduced DPF regeneration efficiency.
What is the correct installation torque and procedure for 0445110685?
The OE-specified procedure for EA189 (2.0 TDI) injector hold-down bolts: (1) Clean the injector bore and M8 thread with a wire brush and compressed air. (2) Fit new copper washers on both the high-pressure and leak-off connections. (3) Install the injector and hand-tighten the two hold-down bolts. (4) Torque each bolt to 8 N·m. (5) Rotate each bolt a further 180°(torque-to-yield - these are stretch bolts and must be replaced every removal). (6) Connect the 16-pin electrical connector and run the lift pump to prime. (7) Code via VCDS or ODIS.
Do I need to code the ECU after installing 0445110685 on a VW / Audi?
Yes - VW / Audi EA189 ECUs require cylinder-specific IMA coding via VCDS (Ross-Tech), ODIS (dealer tool), or a compatible aftermarket tool such as Autel MaxiSys. Skip the coding and you will get fault codes P2146 (cylinder 1 injector short to ground), P2149 (cylinder 4 injector open circuit), rough idle, and a drop in DPF regeneration efficiency. Replace all 4 injectors as a set and code the IMA block once.
What is the warranty on 0445110685?
Standard 12-month warranty from FuelPartsDB. The warranty covers manufacturing defects and premature coil failure. It does NOT cover damage caused by incorrect installation (over-torqued bolts, cross-threaded connections), improper coding (unmatched IMA values causing coil overheating), or use on incompatible engine platforms (EA111 / EA189 mismatch). Always verify the engine code and OE part number before ordering.
What is the most common ordering mistake for 0445110685?
The most common mistake is ordering 0445110685 for a 1.6L TDI (EA111 / CAYC engine) or substituting 0445110646 (lower-flow, for 88-105 kW) when the vehicle actually requires 0445110685 (higher-flow, for 110-130 kW). Always verify by checking the failed injector's stamped OE code (03L130855C / 03L130277J / 03L130277Q) - not just the engine model.
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.
Cross-Reference & Compatibility
Sister parts, same-platform variants, and known incompatibilities.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.