EV Diagnostics
Source-backed diagnostic reference

P1826 EV diagnostic code

Internal Mode Switch Circuit C High

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: Internal Mode Switch Circuit C High Source
  • CADILLAC: Internal Mode Switch Circuit C High Source
  • CHEVY: Internal Mode Switch Circuit C High Source
  • FORD: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery Source
  • GM: Internal Mode Switch Circuit C High Source
  • GMC: Internal Mode Switch Circuit C High Source
  • LINCOLN: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery Source
  • MERCURY: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery Source
  • OLDSMOBILE: Internal Mode Switch Circuit C High Source
  • OTHER: Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery Source
  • SATURN: Internal Mode Switch Circuit C High Source

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