Fuel Pressure: Specifications

The scan tool Fuel Pump Enable may need to be commanded ON a few times in order to obtain the highest possible fuel pressure.


DO NOT perform the Fuel System Diagnosis if the engine coolant temperature is above 60°C (150°F). High fuel pressure readings may result due to hot soak fuel boiling. With the engine OFF, the fuel pressure may increase beyond the pressure relief regulator valve's setting point of 690 kPa (100 psi) ± 5 percent.

Vehicle in Service Mode, command the Fuel Pump Enable ON with a scan tool.

Verify the fuel pressure is between 379-427 kPa (55-62 psi) with the fuel pump operating.

Engine running at normal operating temperature, the Fuel Pump Control Module Fuel Pressure Sensor parameter should read between 296-310 kPa (43-45 psi).