P0002Fuel & Air Metering

Fuel Volume Regulator Control Circuit Range/Performance

P0002 means the fuel volume regulator control circuit is out of the expected range or not performing as commanded. It often points to a sticking or worn regulator, wiring resistance, or a pressure control problem.

🚗 Often driveable but expect fuel delivery and drivability problems. Diagnose promptly, especially on diesel and GDI engines.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Faulty fuel volume regulator$150-$600

40%

A sticking or worn regulator cannot meter fuel accurately.

#2Wiring resistance or connector fault$50-$300

30%

High resistance in the control circuit skews performance.

#3Fuel pressure sensor fault$50-$300

20%

A misreading pressure sensor can make the regulator appear out of range.

🩺 Common Symptoms

Check engine light
Poor acceleration
Rough idle
Hard starting
Reduced fuel economy

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$600

Shop Cost

$150-$1000

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P0002

1Read live fuel pressure data during a test drive

2Inspect regulator wiring and connector for resistance

3Compare commanded versus actual fuel pressure

4Replace the regulator if it is out of spec

❓ Frequently Asked Questions

Can I drive with P0002?

Usually yes for short trips, but drivability and fuel economy suffer. Diagnose it soon, especially on diesel or GDI engines.

What is the most common cause of P0002?

A worn or sticking fuel volume regulator is the most common cause, followed by circuit resistance.

How much does P0002 cost to fix?

Wiring repairs are cheap, while regulator replacement often runs $150-$600.

🔗 Related Codes

P0001P0003P0004P0087