Code P0016 indicates there is a problem with the VCT (Variable Camshaft Timing) in your engine, and the timing between the crankshaft and camshafts are possibly misaligned. It could be due to a number of reasons, including:
- Timing chain has jumped teeth
- Faulty timing chain tensioner(s)
- Crankshaft reluctor ring damage
- Wiring and/or connection problems
Are there any other codes in addition to the P0016 or is that it? If it's the only code, that's a good start.
The first thing to do will be to have the engine timing checked. If it's still timed properly, the camshaft and crankshaft sensors should be inspected and tested next, as well as their wiring and connections to ensure they're clean, connected firmly, and have no breaks or corrosion.
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