EV Diagnostics
Source-backed diagnostic reference

P1781 EV diagnostic code

4x4 Low Switch is Out of Self-Test Range

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • FORD: 4x4 Low Switch is Out of Self-Test Range Source
  • LINCOLN: 4x4 Low Switch is Out of Self-Test Range Source
  • MAZDA: Transmission 4x4 Low Switch Out Of Range Fault Source
  • MERCEDES: Upshift Delay Switchover Valve ATCC Y35 Source
  • MERCURY: 4x4 Low Switch is Out of Self-Test Range Source
  • NISSAN: Transmission 4x4 Low Switch Out Of Range Fault Source
  • OTHER: 4X4 Switch Out of Self Test Range Source
  • VOLKSWAGEN: Engine Torque Reduction Open Short To Ground Source

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