Description:

ECU 000157.17 occurs when the ECU cannot detect the required fuel rail pressure of 10 MPa (100 bar, 1450 psi) after the engine has been running for approximately 3 seconds. This may be due to inadequate fuel supply, a malfunctioning fuel pump, or issues with the fuel pressure regulator.

Reaction:

Without sufficient pressure, the engine may fail to start or operate correctly, potentially leading to poor performance and increased emissions.

Recommendations:

• Check Fuel Supply and Pump Operation: Verify that the fuel supply is adequate and that the fuel pump is operational.
• Inspect Fuel Pressure Regulator and Lines: Evaluate the pressure regulator and lines for any faults or damage that could impede pressure development.
• Diagnostic Testing: Perform comprehensive diagnostic testing to pinpoint the exact cause of the pressure deficiency.
• Replace or Repair Faulty Components: Implement repairs or replacements as needed to restore proper fuel rail pressure.
• Reset ECU and Recheck System: After repairs, reset the ECU and check the system to ensure the fuel rail pressure reaches and maintains the required levels.

Note:

Timely detection and correction of fuel pressure issues are vital to prevent engine damage and ensure reliable operation.