EV Diagnostics
Source-backed diagnostic reference

P1797 EV diagnostic code

CAN TCM ECM Circuit Malfunction

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

  • JAGUAR: CAN TCM ECM Circuit Malfunction Source
  • KIA: Clutch Pedal Switch MT Or P/N Switch Circuit Fault Source
  • MAZDA: P/N Switch Open Or Short Circuit Source
  • NISSAN: P/N Switch Open Or Short Circuit Source
  • OTHER: Neutral Switch Circuit Malfunction Source
  • VOLKSWAGEN: Vehicle Speed Signal Short To B+ Source

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