P0016 on a Toyota Highlander

What P0016 usually means on a Highlander

P0016 means the crank and cam position signals don't line up on bank 1 — the ECU sees the camshaft where it doesn't expect it. On the Highlander it's the chain-driven 2GR-FE V6 where this typically shows up, most often from a stuck VVT oil control valve or a weak position sensor, though a neglected high-mileage engine can point to a stretched timing chain. It usually brings hard starting and rough running and warrants prompt attention, since bad timing can damage valves.

Most likely causes on this model

1. Stuck camshaft timing OCV

   A jammed oil control valve leaves the cam phaser mis-positioned and breaks the crank-cam correlation; check it first.

2. Sludge-starved VVT actuator

   Dirty, neglected oil prevents the phaser from settling at its commanded position.

3. Stretched timing chain

   A worn chain and guides on a high-mileage 2GR-FE can drift cam timing enough to set P0016.

4. Faulty cam or crank sensor

   A weak reading from the cam or crank sensor breaks the correlation the ECU verifies.

What it costs on a Highlander

Replacing an oil control valve or a position sensor is a moderate, mostly bolt-on job. A stretched chain on the 2GR-FE is the expensive outcome, involving the front cover, chain, tensioner, and guides. Confirm the cheaper causes before going that far, and keep the oil at the right viscosity, since low oil pressure by itself can trigger P0016.

Other codes we cover on the Toyota Highlander

Toyota Highlander problems & recalls by year