Valve timing · Severity: High
P0016 — Crankshaft/Camshaft Position Correlation (Bank 1 Sensor A)
The relationship between crankshaft and camshaft signals is outside the expected window.
Common symptoms
- Engine light
- Rattle on cold start
- Long cranking
- Loss of power
Likely causes
- Stretched timing chain or jumped belt
- Worn chain tensioner/guides
- Faulty cam or crank sensor
- Cam phaser stuck
First test to run
Scope crank and cam signals together and compare the pattern to a known-good reference before opening the engine.
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