P0019: Crankshaft-Camshaft Correlation Bank 2 Sensor B
The P0019 code indicates that the Engine Control Module (ECM) has detected a correlation error between the crankshaft position and the camshaft position on Bank 2, Sensor B (exhaust camshaft). This typically means the camshaft timing is off relative to the crankshaft, often due to a stretched timing chain, failed tensioner, or variable valve timing (VVT) system malfunction. The ECM monitors the camshaft and crankshaft position sensors to ensure proper timing; if the signals are out of sync by more than a few degrees, this code is set.
01. Most Common Causes
- Stretched or broken timing chain/belt
- Failed timing chain tensioner or guide
- Faulty camshaft or crankshaft position sensor
- Worn or damaged VVT actuator or solenoid
- Oil sludge or low oil pressure affecting VVT operation
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine may run rough or misfire
- Reduced engine power or poor acceleration
- Hard starting or stalling
- Increased fuel consumption
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect engine oil level and condition; check for sludge.
Step 3: Visually inspect timing chain/belt and tensioner for slack or damage.
Step 4: Test camshaft and crankshaft position sensors with a multimeter or oscilloscope.
Step 5: Check VVT solenoid operation and wiring for faults.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a timing correlation error can cause severe engine damage if the timing chain fails or jumps, leading to valve and piston contact.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repairs vary widely: replacing a sensor may cost $100-$300, while timing chain replacement can range from $1,000 to $2,500 or more depending on the vehicle.