P0019Powertrain
Powertrain · SAE
Crankshaft/Camshaft Correlation — Bank 2 Sensor B
Meaning
The ECU detects a phase misalignment between the crankshaft position and the Bank 2 exhaust camshaft position (CMP). The offset exceeds the manufacturer's permitted threshold.
Common causes
- Stretched or jumped timing chain, Bank 2
- Sticking or sludge-blocked exhaust VVT actuator on Bank 2
- Faulty or intermittent Bank 2 exhaust CMP sensor
- Faulty CKP sensor or excessive air gap to the reluctor wheel
- Insufficient oil pressure to the Bank 2 exhaust VVT actuator
Symptoms
- Check-engine light (MIL) on
- Hard start or no-start condition
- Power loss and torque irregularity
- Increased fuel consumption
- Possible metallic noise from the timing drive
Severity
High: timing misalignment can cause severe internal engine damage; diagnose immediately before further driving.
What to do
- Check engine oil level and condition; replace if necessary
- Inspect the Bank 2 timing chain for slack or tooth skip
- Test the Bank 2 exhaust VVT actuator: oil pressure and circulation
- Test the Bank 2 exhaust CMP sensor with an oscilloscope
- Replace the timing chain or VVT actuator if out of specification