P0016 Code: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

🟠 Moderate severity · drivable

Drivable if the engine runs normally, but this code can point to a stretched timing chain, so get it diagnosed promptly.

What P0016 means

The crankshaft and camshaft position sensors are reporting positions that don't line up the way they should. The two shafts are out of sync, which can mean a sensor problem or, more seriously, a stretched or jumped timing chain.

Symptoms

Check engine light is on
Rough idle or poor running
Rattling noise from the engine
Possible hard starting

Common causes

most common: Stretched or jumped timing chain
common: Faulty camshaft or crankshaft position sensor
less common: Variable valve timing actuator fault

How to fix it

Fix	DIY?	Typical cost
Replace a faulty camshaft or crankshaft position sensor	Yes	$50–150
Replace a stretched or jumped timing chain	Mechanic	$1000–2500

Frequently asked questions

Is P0016 serious?

It can be. It often means a stretched timing chain, which is an expensive repair. If the engine is rattling or running poorly, stop driving and get it checked.

What is the most common cause of P0016?

A stretched or jumped timing chain, though a faulty cam or crank sensor can also trigger it.

How much does it cost to fix a P0016?

A sensor is $50–$150, but a timing chain replacement runs $1,000–$2,500.