P0019 - Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
Last updated:
System
Powertrain (Engine & Gearbox)
Related Fault Codes
Technical Description
P0019 is a generic diagnostic trouble code indicating that the ECU has detected a correlation error between the crankshaft position and the exhaust camshaft position (Sensor B) on Bank 2. The engine management system relies on these signals to determine precise timing for fuel injection and ignition. If the phase shift exceeds a calibrated threshold (typically between 6 and 10 degrees) for a predetermined duration, the code is stored. This often results in the VVT system being disabled to prevent mechanical damage, triggering a limp-home mode.
Possible Causes
Oil flow restriction in VVT solenoid (Oil Control Valve) or sludge buildup
Stretched timing chain or failed timing belt tensioner
Faulty camshaft or crankshaft position sensor (Hall effect)
Damaged tone ring/reloctor wheel or incorrect engine oil viscosity
Symptoms
Recommended Solution
- Inspect oil level and condition. Sludge or incorrect viscosity often affects VVT operation.
- Perform a bi-directional test on the VVT solenoid using a scan tool. Resistance should typically be 7-12 Ohms.
- Check wiring and connectors for the cam and crank sensors for corrosion or damage.
- Use an oscilloscope to verify the correlation between the crankshaft and camshaft signals (pattern matching).
- If sensors are functional but timing is off, inspect the timing chain or belt for stretching or jumped teeth.
Mechanic's Tip
Before replacing expensive components, always double-check wiring and connections. 80% of all sensor faults are actually due to corroded contacts or broken wires.
Do you also have
other fault codes?
See how P0019 connects with your other fault codes. Our advanced analysis tool identifies causal relationships and root causes directly.