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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