P1165 – Fuel Pump Control Circuit Fault (Ford)

Description

P1165 Ford indicates a fault in the fuel pump control circuit.

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Symptoms

  • No start
  • Hesitation
  • Stalling

Causes

  • Wiring issues
  • Relay failure
  • PCM driver fault

Diagnosis

  • Check relay
  • Inspect wiring
  • Test pump control signal

Repair

  • Replace relay
  • Repair wiring

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