Description:

Error code ECU 000157.16 is raised when the fuel rail pressure is detected to be moderately above the normal operational range. This condition might indicate an overactive fuel pump, clogged fuel return line, or a malfunctioning pressure regulator.

Reaction:

The ECU may limit engine power to prevent damage from excessive fuel pressure, which could lead to fuel injector or system damage.

Recommendations:

• Inspect Fuel Pump and Regulator: Ensure that the fuel pump and pressure regulator are functioning correctly and not contributing to excessive pressure.
• Check for Clogged Return Lines: Inspect return lines for blockages that could cause pressure build-up.
• Adjust or Replace Components: Make necessary adjustments or replace any malfunctioning components to maintain correct fuel pressure levels.
• Reset ECU and Clear Codes: Reset the ECU to ensure it accurately controls the fuel system based on the corrected pressure levels.

Note:

Maintaining proper fuel pressure is crucial for engine safety and efficiency. Routine checks can help avoid issues associated with high fuel pressure.