Source-backed diagnostic reference

P1673 EV diagnostic code

Engine Hot Lamp Control Circuit

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: Engine Hot Lamp Control Circuit Source
  • CADILLAC: Engine Hot Lamp Control Circuit Source
  • CHEVY: Engine Hot Lamp Control Circuit Source
  • GM: Engine Hot Lamp Control Circuit Source
  • GMC: Engine Hot Lamp Control Circuit Source
  • OLDSMOBILE: Engine Hot Lamp Control Circuit Source
  • SATURN: Engine Hot Lamp Control Circuit 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.