Exhaust Camshaft Position Timing Over-Retarded (Bank 2)

You can drive short distances. The engine will have reduced power because the exhaust camshaft on bank 2 is stuck in a retarded position. Get it diagnosed within a few days to prevent additional engine wear.

P0015 is exhaust camshaft over-retarded on bank 1 and P0025 is the same condition on bank 2. On a V-engine, each bank has its own VVT system, so the fault is on different sides of the engine.

In many cases, yes. The VVT system depends on clean, properly pressurized oil. If the code appeared because the oil was overdue or the wrong viscosity was used, a fresh oil change and code clear often resolves the issue.

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.