EV Diagnostics
Source-backed diagnostic reference

P1822 EV diagnostic code

Internal Mode Switch Circuit B 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 B High Source
  • CADILLAC: Internal Mode Switch Circuit B High Source
  • CHEVY: Internal Mode Switch Circuit B High Source
  • FORD: Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery Source
  • GM: Internal Mode Switch Circuit B High Source
  • GMC: Internal Mode Switch Circuit B High Source
  • LINCOLN: Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery Source
  • MERCURY: Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery Source
  • OLDSMOBILE: Internal Mode Switch Circuit B High Source
  • OTHER: Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery Source
  • SATURN: Internal Mode Switch Circuit B High 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.