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P1781

4X4 Switch Out of Self Test Range

P1781 is described as “4X4 Switch Out of Self Test Range” in the Generic OBD2 reference. Other reference families are shown below; select the scope relevant to your vehicle.

Manufacturer reference family

Chrysler: P1781

en

Pressure switch circuit: OD; 4x4 Low Switch is Out of Self-Test Range

tr

Basınç şalteri devresi: OD; 4x4 Düşük Anahtar Kendinden Test Aralığı Dışında

Reference namespace
chrysler
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: Chrysler.

5 profiles assigned this reference family
Manufacturer reference family

Ford: P1781

en

4X4 Switch Out of Self Test Range

Reference namespace
ford
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: Ford.

28 profiles assigned this reference family

4 more related profiles are listed in the vehicle directory.

Manufacturer reference family

GM: P1781

en

CAN data bus, ECM actual torque signal - malfunction detected

Reference namespace
gm
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.

Manufacturer reference family

Genesis / Hyundai / Kia: P1781

en

Actuator

ru

Низкое напряжение АКБ

Reference namespace
hyundai-kia
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: Kia, Genesis, Hyundai.

401 profiles assigned this reference family

377 more related profiles are listed in the vehicle directory.

Manufacturer reference family

Lincoln: P1781

en

4x4 Low Switch is Out of Self-Test Range

Reference namespace
lincoln
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.

Manufacturer reference family

Mazda: P1781

en

Transmission 4x4 Low Switch Out Of Range Fault; Transmission 4x4 Low Switch out of Range Fault

Reference namespace
mazda
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: Mazda.

7 profiles assigned this reference family
Manufacturer reference family

Mercedes-Benz: P1781

en

Upshift delay switchover valve (AT/CC) (Y3/5)

Reference namespace
mercedes-benz
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: Mercedes-Benz.

13 profiles assigned this reference family
Manufacturer reference family

Mercury: P1781

en

4x4 Low Switch is Out of Self-Test Range

Reference namespace
mercury
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.

Manufacturer reference family

Dodge / Mitsubishi: P1781

en

4X4 Switch Out of Self Test Range; Gear 3 incorrect ratio

Reference namespace
mitsubishi
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: Mitsubishi, Dodge.

31 profiles assigned this reference family

7 more related profiles are listed in the vehicle directory.

Manufacturer reference family

Infiniti / Nissan: P1781

en

4X4 Switch Out of Self Test Range

Reference namespace
nissan
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: Nissan, Infiniti.

62 profiles assigned this reference family

38 more related profiles are listed in the vehicle directory.

Generic OBD2

Generic OBD2: P1781

en

4X4 Switch Out of Self Test Range

Reference namespace
obd2
Source revision
legacy-2.2.20

Generic OBD2 definition; confirm the protocol and vehicle-specific service information.

Manufacturer reference family

Oldsmobile: P1781

en

4x4 Low Switch is Out of Self-Test Range

Reference namespace
oldsmobile
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.

Manufacturer reference family

Belgee / Geely / Proton: P1781

en

4X4 Switch Out of Self Test Range

Reference namespace
proton
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: Belgee, Geely, Proton.

5 profiles assigned this reference family
Manufacturer reference family

Audi / Jetta / MAN / Seat / Skoda / Volkswagen: P1781

de

Engine Torque Signal Circuit; Engine Torque Reduction Open / Short to Ground

en

Engine Torque Signal Circuit; Engine Torque Reduction Open / Short to Ground

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.

Manufacturer reference family

Polestar / Volvo: P1781

en

Engine Torque Reduction Open / Short to Ground

Reference namespace
volvo
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: Polestar, Volvo.

12 profiles assigned this reference family

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