CLAAS 772Fh: Fuel Pressure Sensor Input Voltage Fault

The ENG (A15) engine calculator detects an issue with the input voltage of the fuel pressure sensor in the common rail high. As a result, the engine power is reduced by 20% per minute until it reaches 50% of its nominal power. The engine calculator also manages the high pressure pump to maintain a 2 000 bar pressure in the common rail by opening the pressure restricter.

1. 1

   The wiring and connections to the fuel pressure sensor in the common rail high

2. 2

   The functionality of the fuel pressure sensor in the common rail high

3. 3

   The input voltage to the fuel pressure sensor in the common rail high

1. 1

   Inspect the wiring and connections to the fuel pressure sensor in the common rail high

   Check for any damage, corrosion, or loose connections that could affect the input voltage.

2. 2

   Test the fuel pressure sensor in the common rail high

   Use a multimeter or diagnostic tool to verify the sensor's output voltage and compare it to the expected values.

3. 3

   Check the input voltage to the fuel pressure sensor in the common rail high

   Measure the voltage supplied to the sensor to ensure it is within the specified range.