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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