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Diagnostic knowledge / 19750 — P3294 Linear Lambda Sensor Bank 4 / Voltage Reference: implausible value; linear lambda probe, exhaust bank 4 / reference voltage implausible
19750

P3294 Linear Lambda Sensor Bank 4 / Voltage Reference: implausible value; linear lambda probe, exhaust bank 4 / reference voltage implausible

19750 is described as “P3294 Linear Lambda Sensor Bank 4 / Voltage Reference: implausible value; linear lambda probe, exhaust bank 4 / reference voltage implausible” in the Audi / Jetta / MAN / Seat / Skoda / Volkswagen reference.

Manufacturer reference family

Audi / Jetta / MAN / Seat / Skoda / Volkswagen: 19750

de

P3294 Linear Lambda Sensor Bank 4 / Voltage Reference: implausible value; lineare Lambda-Sonde, Abgas-Bank 4/Referenzspannung unplausibel

en

P3294 Linear Lambda Sensor Bank 4 / Voltage Reference: implausible value; linear lambda probe, exhaust bank 4 / reference voltage implausible

ru

P3294 Линейный лямбда-зонд, Ряд 4/опорное напряжение: недостоверное значение; Линейный лямбда-зонд, Ряд 4/опорное напряжение: недостоверное значение

Reference namespace
vag
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Skoda, Volkswagen, Audi, Seat, MAN, Jetta.

56 profiles assigned this reference family

32 more related profiles are listed in the vehicle directory.

What should I check before using this definition?

Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.

Organize a scan report or recording
Source and applicability

OBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.

Read the reference method

OBD Lens reference library · catalog legacy-owner-2026-10-09-v81. Sources and scope