EV Diagnostics
Source-backed diagnostic reference

P1549 EV diagnostic code

Intake Manifold Temperature Valve Vacuum Actuator Connection

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

  • FORD: Intake Manifold Temperature Valve Vacuum Actuator Connection Source
  • LINCOLN: Intake Manifold Temperature Valve Vacuum Actuator Connection Source
  • MERCURY: Intake Manifold Temperature Valve Vacuum Actuator Connection Source
  • OTHER: IMCC Circuit Malfunction, Bank B Source
  • VOLKSWAGEN: Boost Pressure Control Valve Open Short To Ground Source

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