FUEL PRESSURE SENSOR INTERMITTENT
Indicates an intermittent issue with the fuel pressure sensor readings.
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What it means (plain English)
The fuel pressure sensor is supposed to measure the fuel pressure in the system. If it’s not working right, the engine may not get the proper amount of fuel, affecting performance.
What the computer is actually seeing
The computer sees fluctuating or inconsistent voltage signals from the fuel pressure sensor. Instead of a steady signal (usually around 0.5 to 4.5 volts), you might see erratic readings.
What a healthy reading looks like
Normal fuel pressure readings should be between 50-70 PSI while the engine is running. Voltage from the sensor should range from 0.5 volts (low pressure) to 4.5 volts (high pressure).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connector at the fuel pressure sensor for any visible damage or disconnections. Correct as necessary.
- 22. Measure the voltage at the fuel pressure sensor with the key on, engine off. You should see a voltage consistent with sensor specs (0.5-4.5 volts). If not, replace the sensor.
- 33. Start the engine and observe fuel pressure using a gauge. Confirm the pressure is within 50-70 PSI. If pressure is out of spec, check the fuel pump and lines for issues.
- 44. Clear the fault code and take the vehicle for a test drive. If the code returns, the sensor or wiring may still be at fault.
Common causes
- Faulty fuel pressure sensor
- Wiring issues or poor connections to the sensor
- Fuel system obstructions affecting pressure
- Faulty fuel pump
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive long distances, as it can cause reduced power or efficiency.
Will this code come back after clearing it?
Yes, if the underlying issue isn’t fixed, it will likely return.
Why does this code appear with others?
It often pairs with other fuel system codes when there are multiple issues affecting fuel delivery.
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