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 Delivery Pressure Switch
The fuel delivery pressure switch is a normally closed switch that monitors the fuel delivery system pressure prior to the high pressure fuel injection pump. The fuel delivery pressure switch opens when the fuel system pressure reaches 17.5 kPa (2.5 psi) or above. If the fuel delivery system pressure drops below 17.5 kPa (2.5 psi) the switch closes and the PCM notifies the driver by displaying a low fuel pressure warning in the message center, and an engine derate occurs. The fuel delivery pressure switch is located at the top of the fuel conditioning module.
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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.