Description:

This diagnostic trouble code indicates that the circuit resistance for the fuel rail pressure surge relief valve is too high, typically indicating an open circuit. This condition can affect the proper functioning of the fuel rail pressure surge relief valve.

Reaction:

The ECU may limit or adjust the operation of the fuel system to manage the high circuit resistance and ensure safe operation of the engine.

Recommendations:

• Inspect Wiring and Connections: Check for damaged, frayed, or loose wiring and connectors associated with the fuel rail pressure surge relief valve circuit. Repair or replace as necessary.
• Test Surge Relief Valve: Use diagnostic tools to test the fuel rail pressure surge relief valve for proper resistance and continuity. Replace the valve if it is faulty.
• Check for Open Circuits: Inspect the circuit for any breaks or discontinuities that could cause high resistance. Repair or replace as needed.
• Verify Electrical Supply: Ensure that the electrical supply to the fuel rail pressure surge relief valve is stable and within specifications.
• Reset ECU and Monitor System: After resolving the issue, reset the ECU to clear the fault code and monitor the system to ensure normal operation.

Note:

Proper electrical function and resistance in the fuel rail pressure surge relief valve circuit are crucial for accurate fuel pressure management and engine performance. Regular inspections and timely maintenance can help prevent resistance-related issues.