P0671, P0672, P13D0 Audi 2.0 TDI EA288 – PSG Glow Plug Pressure Sensor

Q: Wie werden die Fehlercodes P0671, P0672, P13D0 am sichersten behoben?

Replacement of faulty PSG pressure sensing glow plug torqued to 15–18 Nm and resetting combustion pressure adaptations in ECU.

Diagnose-Priorität: Hoch

Komplexitätsgrad: Fortgeschritten

Diagnostic guide for P0671, P0672, and P13D0 on Audi 2.0 TDI EA288. Troubleshooting integrated combustion pressure glow plugs (PSG) and wiring.

Fahrzeug

AUDI

Codes

3 Steuergeräte

Analysetyp

Technischer Experte

Status

Analysiert

Technische Analyse

REF: #B387DB

The combination of P0671, P0672, and P13D0 on Audi 2.0 TDI EA288 indicates an electrical circuit fault or implausible signal from the integrated combustion chamber pressure sensors (PSG) in cylinder 1 and 2 glow plugs.

Erwartete Symptome

Check engine light illuminated with sudden boost drop under hard acceleration on AUDI (DTCs: P0671, P0672, P13D0)

Rough idle and sluggish throttle pickup from a dead stop

Misfiring and hesitation during high-speed highway overtaking (2,500–3,500 RPM)

Systemauswirkungen

Antriebsstrang

Motorsteuerung

Abgasreinigung

Mögliche Fehlerursachen

01Sticking electronic wastegate actuator or heavy carbon buildup on intake valves (affecting AUDI subsystem for P0671, P0672, P13D0)

02Boost control solenoid N75 leakage or split charge air hose

03Ruptured diaphragm in PCV oil separator assembly (logged fault: P0671)

Vorgehensweise / Methodik

Verify supply voltage and sensor telemetry for P0671, P0672, P13D0 on AUDI with multimeter at key ON.

Measure wastegate position feedback voltage at key ON: normal 3.5–3.9 V in closed position.

Smoke-test induction system and boost plumbing at 1.2 bar to pinpoint leaks.

Check crankcase depression with digital manometer at warm idle (-100 to -150 mbar).

Live Data & Mätvärdestoleranser (Är/Bör-värden)

Fabriksgodkända referensvärden vid diagnos och live-avläsning

Mätvärdesblock

Parameter / Signal	Testvillkor	Bör-värde (Normalt)	Avvikelse / Varning
Glödstift värmemotstånd	Kall motor (avstängd)	0.3 – 0.8 Ω	> 2.0 Ω el avbrott (∞ Ω)
PSG Givarsignal Tomgång	Tomgång 800 rpm	35 – 45 bar peak	< 20 bar el fastfrusen signal
PSG 5V Referensspänning	Tändning på	4.95 – 5.05 V	< 4.70 V (Kablagefel/Styrdon)

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Replacement of faulty PSG pressure sensing glow plug torqued to 15–18 Nm and resetting combustion pressure adaptations in ECU.

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Replacement of faulty PSG pressure sensing glow plug torqued to 15–18 Nm and resetting combustion pressure adaptations in ECU.