FUEL INJECTION PRESSURE SENSOR VOLTAGE OUT OF RANGE
The fuel injection pressure sensor voltage is not within the expected limits.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The fuel injection pressure sensor measures the pressure of the fuel and sends a voltage signal. If this signal is too high or too low, the ECM thinks there's a problem with the fuel delivery system.
What the computer is actually seeing
The Engine Control Module (ECM) expects a voltage signal from the fuel injection pressure sensor typically between 0.5V to 4.5V, depending on the pressure. When the voltage is outside this range, it triggers the fault code.
What a healthy reading looks like
Expected voltage from the fuel injection pressure sensor is between 0.5V (low pressure) and 4.5V (high pressure) under normal 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 wiring and connectors to the fuel injection pressure sensor for damage, corrosion, or loose connections. Repair as needed. Decision: If wiring is damaged, repair it. If it's good, proceed to step 2.
- 22. Check the fuel injection pressure sensor with a multimeter. Measure the voltage output while the engine is running. Decision: Is the voltage between 0.5V and 4.5V? If yes, the sensor is likely good. If no, proceed to step 3.
- 33. Replace the fuel injection pressure sensor and clear the fault code. Decision: Does the fault code return after a test drive? If yes, investigate potential ECM issues or fuel system problems.
Common causes
- Faulty fuel injection pressure sensor
- Wiring issues (shorts, opens, or corrosion)
- Bad ECM
- Fuel delivery problems (pump failure, clogged filters)
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive with this code?
You can drive, but fix it soon since it affects fuel delivery and engine efficiency.
Will the code come back after repairs?
If the repairs are done correctly, the code shouldn't return.
Why does this code show up with other codes?
This code commonly pairs with others related to fuel pressure or delivery, indicating a broader issue.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →