EV Diagnostics
Source-backed diagnostic reference

P1538 EV diagnostic code

A/C request 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: A/C request Circuit High Voltage Source
  • CADILLAC: A/C Request Circuit High Voltage Source
  • CHEVY: A/C Request Circuit High Voltage Source
  • CHRYSLER: A/C Request Circuit High Voltage Source
  • FORD: Intake Manifold Runner Control Stuck Open Source
  • GM: A/C Request Circuit High Voltage Source
  • GMC: A/C Request Circuit High Voltage Source
  • LINCOLN: Intake Manifold Runner Control Stuck Open Source
  • MERCURY: Intake Manifold Runner Control Stuck Open Source
  • OLDSMOBILE: A/C Request Circuit High Voltage Source
  • OTHER: Intake Manifold Runner Control (Bank 2) Stuck Open Source
  • SATURN: A/C Request Circuit High Voltage Source
  • VOLKSWAGEN: Engine Shutoff Solenoid Open Short To Ground Source

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