P0019: Crankshaft Position — Camshaft Position Correlation (Bank 2 Sensor B)
Do not keep driving
Stop driving and arrange recovery. Have the mechanical timing verified before any part is replaced.
What this code means
Correlation has failed on bank 2's B camshaft, normally the exhaust. Completing the set of four correlation codes, this one carries the same warning as the rest: it describes a relationship between two signals, and the most likely reason that relationship broke is that something mechanical moved. Sensors are the cheap explanation, not usually the right one.
Likely causes
Start here
- Stretched timing chain · specialist
- Worn timing chain tensioner or guide · specialist
- Worn camshaft phaser · specialist
Less common
- Timing chain or belt out of alignment · specialist
- Faulty camshaft position sensor · moderate
- Low or dirty engine oil · easy
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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