John Deere 157..............: Fuel Rail Pressure Signal Out of Range High

The fuel rail pressure signal is detected to be higher than the acceptable range, indicating a potential issue with the fuel system's pressure regulation.

1. 1

   Fuel rail pressure sensor

2. 2

   Fuel system pressure regulation

3. 3

   Fuel pump operation

1. 1

   Inspect

   Inspect the fuel rail pressure sensor for damage or loose connections.

2. 2

   Test

   Test the fuel rail pressure sensor for proper operation using a diagnostic tool.

3. 3

   Check

   Check the fuel system for leaks or blockages that may affect pressure.

4. 4

   Verify

   Verify the fuel pump is operating correctly and delivering the proper pressure.