Fuel Pressure Sensor Range/Performance Problem
The fuel pressure is outside the expected range.
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What it means (plain English)
The computer is noticing that the fuel pressure sensor is reading values that don't match what it expects, which may affect fuel delivery.
What the computer is actually seeing
The ECM expects the fuel pressure to be between 50 and 70 PSI in normal operating conditions; readings below 45 PSI or above 75 PSI trigger this code.
What a healthy reading looks like
Fuel pressure should ideally be around 60 PSI; acceptable range is 45-75 PSI depending on the engine's operating conditions.
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. Inspect the fuel pressure sensor wiring and connector for damage or corrosion.
- 22. Confirm that the fuel tank is not dangerously low; fill to at least 1/4 full if low.
- 33. Using a fuel pressure gauge, measure the actual fuel pressure; it should be between 45-75 PSI.
- 44. If the reading is out of range, check the fuel pump operation and the fuel filter for blockages.
- 55. If wiring and pressure reading are good, replace the fuel pressure sensor and retest.
Common causes
- Faulty fuel pressure sensor
- Clogged fuel filter
- Weak fuel pump
- Leaking fuel lines
- Electrical issues such as short or open circuit on the sensor circuit
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive the vehicle with this code?
It's not recommended to drive long distances; low fuel pressure can cause performance issues.
Will this problem come back after fixing it?
If the root cause, like a weak fuel pump or clogged filter, is not addressed, it may return.
Why does it pair with SPN 2440?
SPN 2440 also deals with fuel pressure but focuses on the sensor circuit, making them related.
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