EV Diagnostics
Source-backed diagnostic reference

P1901 EV diagnostic code

Turbine Shaft Speed (TSS) Circuit Intermittent 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

  • FORD: Turbine Shaft Speed (TSS) Circuit Intermittent Malfunction Source
  • LINCOLN: Turbine Shaft Speed TSS Circuit Intermittent Malfunction Source
  • MAZDA: Torque Converter Clutch Circuit Intermittent Source
  • MERCURY: Turbine Shaft Speed TSS Circuit Intermittent Malfunction Source
  • NISSAN: Torque Converter Clutch Circuit Intermittent Source
  • OTHER: TSS Circuit Intermittent Malfunction Source

Search and canonical URL

Capitalization, underscores, hyphens, colons and spaces are normalized to this canonical code identity so alternate scan-tool formats do not create duplicate pages.