EV Diagnostics
Source-backed diagnostic reference

P1641 EV diagnostic code

FC Relay 1 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: FC Relay 1 Control Circuit Source
  • CADILLAC: FC Relay 1 Control Circuit Source
  • CHEVY: FC Relay 1 Control Circuit Source
  • FORD: Fuel Pump Primary Circuit Failure Source
  • GM: FC Relay 1 Control Circuit Source
  • GMC: FC Relay 1 Control Circuit Source
  • JAGUAR: Fuel Pump Primary Circuit Source
  • LINCOLN: Fuel Pump Primary Circuit Failure Source
  • MERCURY: Fuel Pump Primary Circuit Failure Source
  • OLDSMOBILE: FC Relay 1 Control Circuit Source
  • OTHER: Fuel Pump Primary Circuit Failure Source
  • SATURN: FC Relay 1 Control Circuit Source
  • VOLKSWAGEN: Check DTC Memory Of Air Condition ECU Source

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