P0019: “Crankshaft Position – Camshaft Position Correlation (Bank 2 Sensor B)”.

 

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🔧 Code Meaning

P0019 indicates the ECM detects a timing misalignment between the crankshaft and the camshaft (exhaust cam, Bank 2).

Bank 2 = the side of the engine without cylinder #1.

Sensor B = exhaust camshaft position sensor.

 

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⚙️ Possible Causes

Type Common Causes

Mechanical (most common)

👉🏻 Stretched timing chain / worn timing belt <br>
👉🏻Jumped timing (skipped tooth on chain/belt) <br>
👉🏻 Faulty or misaligned camshaft timing gear (phaser) <br>
👉🏻 Incorrect camshaft/crankshaft installation after engine work
Electrical
👉🏻 Faulty camshaft position sensor (Bank 2, exhaust) <br>
👉🏻 Faulty crankshaft position sensor <br>
👉🏻 Damaged wiring harness or poor connector contact
Oil / VVT system
👉🏻 Low or dirty engine oil <br>
👉🏻 Faulty oil control valve (OCV) / VVT solenoid (Bank 2 exhaust) <br>
👉🏻 Blocked oil passage to cam phaser
ECM Related (rare)
👉🏻 ECM timing miscalibration or internal fault

 

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🔍 Step-by-Step Diagnosis

1. Check oil level and quality

Ensure correct oil grade and no sludge.

Dirty oil can cause VVT solenoid sticking → wrong cam timing.

 

2. Inspect electrical connections

Check connectors at CMP (camshaft position) sensor B Bank 2 and CKP (crankshaft position) sensor.

Look for corrosion, loose pins, or broken wires.

 

3. Scan live data

Compare camshaft angle (Bank 2 exhaust) vs crankshaft reference using a scanner.

If timing deviation > 5–10°, there’s likely a mechanical issue.

 

4. Test sensors

Use oscilloscope or multimeter to verify proper waveform and resistance of:

Camshaft position sensor (Bank 2 exhaust)

Crankshaft position sensor

 

5. Inspect timing components

Remove valve cover if needed.

Check:

Chain stretch or slack

Phaser locking pin condition

Alignment marks between crank and cam sprockets.

 

6. Test / clean VVT solenoid (OCV)

Apply 12V to check actuation.

Clean oil control valve if sludged.

 

7. Final step

After repairs → clear code and road test.

Verify cam/crank correlation is within range.

 

 

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🧰 Common Fixes

✅ Replace camshaft position sensor (Bank 2 exhaust)
✅ Replace or clean VVT solenoid (Bank 2)
✅ Replace stretched timing chain and tensioner
✅ Fix wiring issues (short/open)
✅ Engine timing adjustment if previously worked on

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⚠️ Tip

If you’re repeatedly getting P0016–P0019 codes across banks, inspect timing chain stretch or phasers — very common in GM, Hyundai, Kia, and BMW engines after 80–100k km.

 

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