EV Diagnostics
Source-backed diagnostic reference

P1780 EV diagnostic code

CAN Torque Reduction

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

  • BMW: CAN Torque Reduction Source
  • BUICK: Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit Source
  • CADILLAC: Park/Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit Source
  • CHEVY: Park/Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit Source
  • FORD: Transmission Control Switch Circuit is Out of Self-Test Range Source
  • GM: Park Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit Source
  • GMC: Park Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit Source
  • LEXUS: PNP Switch Malfunction Source
  • LINCOLN: Transmission Control Switch Circuit is Out of Self-Test Range Source
  • MAZDA: Transmission Control Switch Circuit, Overdrive Off Switch Not Cycled During The Self Test Source
  • MERCEDES: Modulation Pressure Switchover Valve ATCC Y34 Or Upshift Delay Switchover Valve ATCC Y35 Source
  • MERCURY: Transmission Control Switch Circuit is Out of Self-Test Range Source
  • NISSAN: Transmission Control Switch Circuit Overdrive Off Switch Not Cycled During The Self Test Source
  • OLDSMOBILE: Park Neutral Position Switch Circuit Engine Torque Signal Circuit Source
  • OTHER: Trans Control Switch (O/D Cancel) Out of Self Test Range Source
  • SATURN: Park Neutral Position PNP Switch Circuit Engine Torque Signal Circuit Source
  • TOYOTA: Park Neutral Position Switch Malfunction Only For A/T Source
  • VOLKSWAGEN: Engine Intervention Readable Source

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