CLAAS 7776h – Claas Eng A15 Engine Module: Error in fuel pressure of the common rail

The engine calculator is instructing the high pressure pump to adjust the fuel quantity in the common rail, which may result in misfiring, irregular running, or low power output. The issue is related to the fuel pressure of the common rail.

1. 1

   Supply ducts and fittings

2. 2

   Timing of the high pressure pump

3. 3

   The fuel pressure sensor of the common rail (B42)

4. 4

   The engine module ENG (A15)

1. 1

   Inspect

   Check the supply ducts and fittings for leaks, damage, or blockages.

2. 2

   Verify

   Confirm the timing of the high pressure pump is correctly set according to the service manual.

3. 3

   Test

   Test the fuel pressure sensor of the common rail (B42) for proper function and signal output.

4. 4

   Diagnose

   Diagnose the engine module ENG (A15) for potential faults or communication issues.