EV Diagnostics
Source-backed diagnostic reference

P1704 EV diagnostic code

Transmission system problems

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: Transmission system problems Source
  • LINCOLN: Transmission System Problems Source
  • MERCURY: Transmission system problems Source
  • OTHER: Digital TRS Failed to Transition States in KOEO / KOER Source
  • SUBARU: 2-4 Brake Timing Solenoid Valve Circuit Malfunction Source
  • VOLKSWAGEN: Kick Down Switch Malfunction Source

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