Diesel Engine Troubleshooting

Rail Pressure Sensor (Pc Sensor)

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The rail pressure sensor (Pc sensor) is installed on the rail. It detects the fuel pressure in the rail and sends a signal to the engine ECU. This is a semi-conductor sensor that uses the piezo-electric effect of the electrical resistance varying when pressure is applied to a silicon element.

pic1 65 Rail Pressure Sensor (Pc Sensor)

There are also rail pressure sensors that have dual systems to provide a backup in case of breakdown. The output
voltage is offset.

pic1 66 Rail Pressure Sensor (Pc Sensor)

Written by Jack

March 7th, 2019 at 12:55 am

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