FUEL PRESSURE SENSOR
Fuel pressure sensor signal out of range.
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What it means (plain English)
The fuel pressure sensor monitors how much pressure is in the fuel system, and this code means the readings are too high or too low, which can affect engine performance.
What the computer is actually seeing
The ECM expects the fuel pressure to be between 6 and 8 psi when at idle; any reading outside of these values triggers the code.
What a healthy reading looks like
At idle, the fuel pressure should be between 6-8 psi; at full throttle, it may need to be between 10-14 psi depending on the vehicle.
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 to the fuel pressure sensor for damage or corrosion. If found, repair or replace as needed -> if wiring/connectors are good, move to step 2.
- 22. Using a multimeter, check the voltage output of the fuel pressure sensor. At key ON, you should see 0.5V to 4.5V depending on the pressure. If not within range, replace the sensor.
- 33. Test fuel pressure with a gauge. At idle, it should be 6-8 psi. If it's too low, check for fuel pump operation or a clogged fuel filter -> if correct but code persists, replace the sensor.
Common causes
- Faulty fuel pressure sensor
- Damaged wiring or connector to the sensor
- Fuel pump malfunction
- Fuel filter blockage
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you can drive, but performance issues may occur, so fix soon.
Will this code come back after clearing?
If the underlying issue isn’t fixed, yes, it will likely return.
Can this code be related to other engine issues?
Yes, it can be related to fuel delivery problems such as pump or filter issues.
Working a real vehicle right now?
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