04E127025G
BOSCH 04E127025G Hochdruckpumpe VW Golf 7 Passat Audi A3 1.4 TSI
04E127025D, 0261520261, 0261520262, HPP0021Integrated Fuel Metering Solenoid Valve N290-200 barFahrzeug- und Motorverwendung
| Fahrzeug | Motor | Baujahre |
|---|---|---|
| Volkswagen Golf Mk7 / Jetta / Passat / Tiguan | Volkswagen / Audi EA211 1.4L & 1.5L TSI / TFSI (CZDA / CZEA / CHPA / DADA) | 2013-2020 |
| Audi A3 8V / Q3 8U | Volkswagen / Audi EA211 1.4L & 1.5L TSI / TFSI (CZDA / CZEA / CHPA / DADA) | 2013-2019 |
Technische Daten
| Spezifikation | Wert |
|---|---|
| BetriebsdruckKernwert | |
| Pump Technology | Single Plunger Mechanical Camshaft-Driven HPFP |
| Flow Control | Integrated Solenoid Fuel Metering Valve (N290) |
| Mounting Flange Torque | 20 N·m |
| High Pressure Line Torque | 27 N·m |
| Drive Type | Intake Camshaft Tri-Lobe Drive with Roller Tappet |
| Fuel Type | Gasoline / Premium Unleaded Direct Injection |
| OE Cross References | 04E127025G, 04E127025B, 04E127025D, 0261520261, 0261520262 |
| Failure Symptoms | Long crank on warm engine, P0087 low rail pressure, hesitation under load, limp mode |
| Diagnostic Test | Measure LPFP lift pressure (4-7 bar) vs HPFP peak rail pressure (140-200 bar) |
Passende Kraftstoffinjektoren (Kraftstoffkreislauf-Baugruppe)
Wird direkt von dieser Hochdruckpumpe versorgt. Rücklaufmenge prüfen, wenn der Raildruck beim Starten nicht ansteigt.
Einbauhinweise
- [
- "Disconnect 12V battery and relieve high-pressure fuel system residual pressure via scan tool or low-pressure port.",
- "Disconnect electrical connector from fuel metering valve N290 and unthread low-pressure feed hose.",
- "Counter-hold fitting and loosen high-pressure steel rail flare nut using a flare nut wrench.",
- "Evenly back out the two M6 mounting bolts half a turn at a time to prevent uneven spring tilting pressure.",
- "Inspect roller tappet in the cylinder head bore for scuffing, flat spotting, or excessive play; replace if worn.",
- "Lubricate new O-ring with clean motor oil, seat pump squarely, and torque mounting bolts alternately to 20 N·m.",
- "Hand-thread high-pressure line flare nut until seated, then torque precisely to 27 N·m; reconnect N290 plug.",
- "Cycle ignition to pressurize low-pressure circuit, verify zero fuel leaks around fittings, and clear stored DTCs."
- ]
Fehlercodes (DTC) & Diagnoseprotokolle
Häufige Diagnose-Fehlercodes (DTCs), die ausgelöst werden, wenn dieser Common-Rail-Injektor Verschleiß, Schaltkreisfehler oder Kalibrierungsabweichungen aufweist:
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.
Technische Diagnose- & Service-Protokolle
Verifizierte Prüfverfahren, Fehlercode-Grenzwerte und Werkstatt-SOPs für diese Baugruppe.