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Diagnose/P0233
P0233Medium SeverityFuel System

Fuel Pump Secondary Circuit Intermittent

What This Means

The fuel pump monitoring circuit is experiencing intermittent signal loss, affecting the PCM's ability to verify fuel pump operation.

Common Symptoms

  • Intermittent stalling
  • Random hard starting
  • Momentary power loss
  • Check engine light on

Common Causes

  • Loose fuel pump connector
  • Intermittent wiring break
  • Failing fuel pump
  • Relay contact wear
  • Vibration damage

Estimated Repair Cost

$150 – $800
Parts and labor (varies by vehicle and location)
Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.