P008B
Low Pressure Fuel System Pressure - Too High
The low-pressure fuel pressure is above the expected value. Often caused by a stuck-closed fuel return valve or a faulty pressure regulator.
The low-pressure fuel pressure is above the expected value. Often caused by a stuck-closed fuel return valve or a faulty pressure regulator.
Common causes
- high
Pressure regulator stuck closed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-660
- medium
Return line blocked
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-660
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P008B mean?
P008B means "Low Pressure Fuel System Pressure - Too High". It is a generic OBD-II code that points to a fault in the fuel & air metering / auxiliary emission controls.
What are the most common causes of P008B?
pressure regulator stuck closed; return line blocked — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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