P0016 — Crankshaft/Camshaft Position Correlation (Bank 1, Sensor A)
Drivable short-term, but fix now to avoid damage.
What P0016 means
P0016 means the computer sees a mismatch between the crankshaft and camshaft position signals. This can come from a stretched timing chain, a faulty VVT component, sensor problems, or a jumped timing belt. Because it can point to serious internal timing issues, it deserves prompt attention.
Common symptoms
- Check engine light on, sometimes flashing
- Engine is hard to start or won't start
- Rough running or stalling
- Rattling noise from the front of the engine
- Noticeable loss of power
Common causes
- Stretched or worn timing chain
- Jumped or skipped timing belt/chain
- Faulty camshaft or crankshaft position sensor
- Stuck VVT solenoid or actuator
- Worn timing chain guides or tensioner
- Low oil pressure affecting cam timing
Typical repair cost
$150 – $1500
Varies by vehicle and root cause.
Frequently asked questions
Can I drive with a P0016 code?
It's risky. The engine may stall or fail to start, and in some cases the timing fault can cause internal damage. It's safest to stop driving and get it checked.
How much does fixing P0016 cost?
It varies widely, from about $150 for a sensor up to $1,500 or more if a timing chain, guides, and tensioner need replacing.
Is P0016 a serious code?
Yes, it's one of the more serious timing codes. Because it can involve the timing chain or belt, it should be diagnosed promptly.
Why does P0016 sometimes cause a no-start?
If the crank and cam are far enough out of sync, the computer can't time fuel and spark correctly, which may prevent the engine from starting.