Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Functional description
The fuel pressure sensor delivers a voltage signal to the DDE. A diaphragm in the fuel pressure sensor channels the fuel pressure which is converted into a voltage signal by 4 pressure-sensitive resistors.
The fuel pressure and temperature sensor contains a temperature-dependent resistor that protrudes into the fuel and reaches its temperature. The resistor has a negative temperature coefficient (NTC). The resistance is less as the temperature increases. The resistance changes from 75.5 kΩ to 87.6 Ω temperature-dependent, which corresponds to a temperature of -40 °C to 120 ° C.
| Item | Explanation |
|---|---|
| 1 | 4-pin plug connection |
| 2 | Fuel pressure and temperature sensor |
| 3 | Fuel delivery line |
| 4 | High pressure pump |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.