P0004moderate severityPowertrain

Fuel Volume Regulator Control Circuit High

on 2011 GMC Yukon 5.3L V8 · RWD

What this code means

The PCM detected a higher than expected signal from the fuel volume regulator control circuit.

Symptoms

  • Check Engine Light
  • High fuel pressure
  • Rich running
  • Black exhaust smoke

Common causes

  • Open in regulator ground circuit
  • Faulty regulator
  • PCM driver failure
  • Wiring issue

Diagnostic steps

  1. Check circuit voltage
  2. Test regulator resistance
  3. Inspect ground connection
  4. Check PCM output

Repair notes

Repair open circuit or replace regulator.

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