Fuel Volume Regulator Control Circuit Range/Performance
The P0002 code indicates a problem with the fuel volume regulator control circuit, which is part of the fuel system that manages fuel pressure and volume delivered to the engine. The Powertrain Control Module (PCM) has detected that the actual fuel pressure or volume does not match the desired value, or the circuit is out of range. This can be caused by a faulty fuel volume regulator, wiring issues, or a malfunctioning fuel pump.
1. Most Common Causes
- Faulty fuel volume regulator
- Wiring or connector issues in the regulator circuit
- Failed fuel pump
- Clogged fuel filter or fuel lines
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine hesitation or rough idle
- Poor fuel economy
- Hard starting or stalling
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Inspect the fuel volume regulator and its wiring for damage or corrosion.
Step 3: Test fuel pressure with a gauge to compare actual vs. specified pressure.
Step 4: Check the fuel pump operation and fuel filter condition.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause poor engine performance and potential stalling. Have it diagnosed promptly.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150, and repairs can range from $100 for a regulator to $500+ for a fuel pump replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.