2005 Nissan xterra check engine light p0340 code. Replaced both cam sensors and

Owner : Were the replacement parts sourced from the dealer ? Or were aftermarket parts used ? For some applications, we prefer Original equipment parts . Other possible solutions are : camshaft timing issue, neglected engine oil changes, sensor connections or wiring damage, engine control computer problem a good capable scan tool and/ or a lab scope analysis may prevent purchasing parts your vehicle does not need .

Worn chain /failed vtc actuator or both.