EV Diagnostics
Source-backed diagnostic reference

P1864 EV diagnostic code

Torque Converter Clutch Circuit

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

  • BUICK: Torque Converter Clutch Circuit Source
  • CADILLAC: Torque Converter Clutch Circuit Source
  • CHEVY: Torque Converter Clutch Circuit Source
  • GM: Torque Converter Clutch Circuit Source
  • GMC: Torque Converter Clutch Circuit Source
  • OLDSMOBILE: Torque Converter Clutch Circuit Source
  • OTHER: Transmission Transfer Case Contact Plate Power Short To Battery Source
  • SATURN: Torque Converter Clutch Circuit Source
  • VOLKSWAGEN: Data Bus Powertrain Missing Message From ADR Control Module Source

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