EV Diagnostics
Source-backed diagnostic reference

P1423 EV diagnostic code

Intake Air High Pressure Switch Circuit High Voltage

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: Intake Air High Pressure Switch Circuit High Voltage Source
  • CADILLAC: Intake Air High Pressure Switch Circuit High Voltage Source
  • CHEVY: Intake Air High Pressure Switch Circuit High Voltage Source
  • CHRYSLER: Intake Air High Pressure Switch Circuit High Voltage Source
  • GM: Intake Air High Pressure Switch Circuit High Voltage Source
  • GMC: Intake Air High Pressure Switch Circuit High Voltage Source
  • OLDSMOBILE: Intake Air High Pressure Switch Circuit High Voltage Source
  • OTHER: EGI Functionality Test Failed Source
  • PLYMOUTH: Intake Air High Pressure Switch Circuit High Voltage Source
  • PONTIAC: Intake Air High Pressure Switch Circuit High Voltage Source
  • SATURN: Intake Air High Pressure Switch Circuit High Voltage Source
  • SUBARU: EVAP Vent Control High Input Source
  • VOLKSWAGEN: Secondary Air Injection System Bank 1 Flow Too Low Source

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