EV Diagnostics
Source-backed diagnostic reference

P1791 EV diagnostic code

TCM A/T Vehicle Speed Sensor Circuit Fault

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

  • ACURA: TCM A/T Vehicle Speed Sensor Circuit Fault Source
  • BUICK: Transmission Control Module Loop Source
  • CADILLAC: Transmission Control Module Loop Source
  • CHEVY: Transmission Control Module Loop Source
  • GM: Transmission Control Module Loop Source
  • GMC: Transmission Control Module Loop Source
  • HONDA: TCM A/T Vehicle Speed Sensor Circuit Fault Source
  • INFINITI: TCM A/T Vehicle Speed Sensor Circuit Fault Source
  • JAGUAR: Ignition Supply Malfunction Source
  • MAZDA: TP Electric Circuit Source
  • MITSUBISHI: PCM ECT Level Signal To TCM Circuit Fault Source
  • NISSAN: TP Electric Circuit Source
  • OLDSMOBILE: Transmission Control Module Loop Source
  • OTHER: TP (Electric) Circuit Malfunction Source
  • SATURN: Transmission Control Module Loop Source
  • VOLKSWAGEN: Transmission Range Display Circuit Short To Ground Source

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