Fuel Pressure Sensor Out of Range
The fuel pressure sensor is reporting outside of the expected range.
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What it means (plain English)
The fuel pressure sensor is reading a fuel pressure that’s either too high or too low, which can cause the engine not to run properly or stall.
What the computer is actually seeing
The engine control module (ECM) monitors the fuel pressure sensor's voltage signal, which should typically range around 0.5 to 4.5 volts, corresponding to pressures between 5 and 70 psi, depending on the system. If the signal is below 0.4 volts or above 4.6 volts, the ECM triggers SPN 1710.
What a healthy reading looks like
Fuel pressure should typically be within 5-70 psi. The voltage from the fuel pressure sensor should read between 0.5V - 4.5V depending on 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. Check the fuel level in the tank. Ensure it is adequate to avoid misdiagnosis. Decision: If low, fill tank and retest. If okay, proceed to step 2.
- 22. Inspect the wiring and connectors between the fuel pressure sensor and the ECM. Look for frayed wires, corrosion, or loose connections. Decision: If damaged, repair or replace wiring as necessary and retest. If okay, proceed to step 3.
- 33. Measure the voltage at the fuel pressure sensor with the key on, engine off. Expect 0.5V - 4.5V. Decision: If the voltage is out of range, replace the fuel pressure sensor. If within range, proceed to step 4.
- 44. Perform a fuel system pressure test. Use a pressure gauge to check fuel pressure against the manufacturer's specifications. Decision: If pressure is out of spec, address the source issue (fuel pump, filter, etc.). If pressure is okay, inspect the ECM for faults.
Common causes
- Faulty fuel pressure sensor
- Wiring issues or connector problems in the fuel pressure circuit
- Clogged fuel filter
- Issues with the fuel pump or fuel system
- Air in the fuel system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is not recommended; driving with erratic fuel pressure might cause stalling or poor engine performance.
Will the code come back after I fix it?
If the underlying issue is resolved, the code should clear. If it reoccurs, there may be a deeper problem.
Why do I see this code with other fuel system codes?
Fuel pressure issues can trigger multiple codes related to fuel delivery and performance, as they are interconnected.
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