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P018FPowertrain (P)generic

Fuel System Over Pressure Relief Valve Frequent Activation

The fuel system's over-pressure relief valve is opening too frequently to protect the system from excessive pressure buildup. This indicates either a faulty valve, a fuel pump that's running too hard, or a pressure regulator problem. Continued operation without repair risks fuel system damage and poor engine performance.

No detailed repair guide linked yet. Check back soon or search for related issues.