EV Diagnostics
Source-backed diagnostic reference

P1299 EV diagnostic code

Vacuum Leak Found (IAC Fully Seated)

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

  • DODGE: Vacuum Leak Found (IAC Fully Seated) Source
  • FORD: Cylinder Head Temperature Sensor Detected Engine Overheating Condition Source
  • JEEP: Vacuum Leak Found (IAC Fully Seated) Source
  • LINCOLN: Cylinder Head Temperature Sensor Detected Engine Overheating Condition Source
  • MERCURY: Cylinder Head Temperature Sensor Detected Engine Overheating Condition Source
  • OTHER: Cylinder Head Overtemperature Protection Active Source
  • PLYMOUTH: Vacuum Leak Found IAC Fully Seated Source
  • PONTIAC: Vacuum Leak Found IAC Fully Seated Source
  • GENERIC: Cylinder Head Overtemperature Protection Active 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.