CUSTOMER CONCERN The engine runs rough with a timing-chain rattle and stores DTCs P0011 and P0300. CAUSE Diagnosis confirmed a worn timing chain as the source of the camshaft-timing fault, misfire, and rattle. CORRECTION Remove and replace the timing chain, clear DTCs, and verify smooth engine operation without timing-chain noise.

CUSTOMER CONCERN Check-engine light is on with DTC P0011. CAUSE Testing confirmed a failed intake camshaft actuator solenoid. CORRECTION Remove and replace the failed intake camshaft actuator solenoid.