Source-backed diagnostic reference

P1663 EV diagnostic code

Oil Life 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: Oil Life Lamp Control Circuit Source
  • CADILLAC: Oil Life Lamp Control Circuit Source
  • CHEVY: Oil Life Lamp Control Circuit Source
  • FORD: Fuel Demand Command Signal Circuit Malfunction Source
  • GM: Oil Life Lamp Control Circuit Source
  • GMC: Oil Life Lamp Control Circuit Source
  • LEXUS: OCV Circuit Malfunction Bank 2 Source
  • LINCOLN: Fuel Demand Command Signal Circuit Malfunction Source
  • MERCURY: Fuel Demand Command Signal Circuit Malfunction Source
  • OLDSMOBILE: Oil Life Lamp Control Circuit Source
  • OTHER: Fuel Demand Command Signal Circuit Malfunction Source
  • SATURN: Oil Life Lamp Control Circuit Source

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