Exhaust Camshaft Position Timing Over-Advanced (Bank 2)

You can drive short distances at moderate speeds. The over-advanced exhaust cam timing on bank 2 will cause rough running and reduced power. Avoid hard acceleration and have the vehicle diagnosed promptly.

It is moderately serious. While it will not cause immediate engine failure, running with incorrect exhaust cam timing can increase exhaust temperatures, reduce catalytic converter life, and cause poor engine performance over time.

If the wrong oil viscosity was used, the VVT system may not operate correctly. Also, if the engine had severe sludge buildup, an oil change can dislodge debris that clogs VVT solenoid screens. Verify the correct oil spec and check the solenoid screen.

California's OBD II regulation defines two separate VVT malfunctions (Title 13 CCR 1968.2, section (e)(13.2)). Target Error is the system failing to reach the commanded valve timing within a crank-angle or lift tolerance; Slow Response is reaching it, but too late. Both are set at the point where the deviation would push emissions past 1.5 times the FTP standards. The practical consequence is that a phaser can be moving and still be faulty — being slow is its own failure, so a component that responds correctly but sluggishly will still set a code. This is the threshold the monitor is designed around, not a description of your specific fault — the regulation says what the system must detect, not how to find it on your vehicle.