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.
Fuel pressure and temperature sensor: Notes
The fuel temperature and pressure are registered by a combined sensor housed in the fuel feed directly before the high pressure pump.
The fuel temperature sensor measures the fuel temperature before the high pressure pump. The fuel pressure and temperature sensor measures the pressure in the low pressure fuel system before the high pressure pump. The fuel pressure is used by the Digital Diesel Electronics (DDE) to activate the fuel pump in accordance with requirements. The sensor signals are also intended to calculate the fuel injection rate and protect the engine against overheating.
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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.