Crankshaft/Camshaft Position Correlation Bank 2 Sensor B
The engine control module (PCM) has detected an improper alignment between the crankshaft and the Bank 2 exhaust camshaft (Sensor B). This code is set when the sensor signals indicate the camshaft timing is out of its expected phase relative to the crankshaft.
A timing correlation issue can lead to severe drivability problems, stalling, or catastrophic internal engine damage if a timing chain or belt fails. It should be diagnosed and repaired immediately.
Common symptoms
- Illuminated Check Engine Light
- Rough or unstable engine idle
- Noticeable loss of engine power and poor acceleration
- Engine stalling or hesitation
- Decreased fuel efficiency
Likely causes
- Low engine oil level or dirty, degraded oil
- Stretched timing chain or worn timing components (tensioners/guides)
- Faulty Variable Valve Timing (VVT) solenoid / Oil Control Valve on Bank 2 exhaust
- Defective camshaft or crankshaft position sensor
- Damaged or jumped timing belt/chain
- Wiring or connector issues in the VVT or sensor circuits
What to check before replacing parts
Check the engine oil level and condition.
Look for: Low oil levels or excessively dirty oil can prevent the VVT system from operating correctly, causing timing correlation codes.
Scan for additional OBD-II codes.
Look for: Look for VVT system codes, misfires, or sensor circuit codes that might point to an electrical fault rather than a mechanical timing issue.
Test the Bank 2 exhaust VVT solenoid (Oil Control Valve).
Look for: Remove and inspect the solenoid for sludge or debris, and apply voltage to ensure it actuates smoothly without sticking.
Analyze the camshaft and crankshaft sensor signals with an oscilloscope.
Look for: Compare the waveforms to a known good pattern to verify if the timing is genuinely out of phase or if a sensor is dropping its signal.
Perform a visual inspection of the mechanical timing components.
Look for: Remove the timing cover and check for a stretched chain, collapsed tensioner, broken guides, or misaligned timing marks.
This page explains the generic P0019 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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