Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)

What You Might Notice

• Check engine light on
• Hard starting or no-start condition
• Rough running and reduced power
• Timing chain rattle, especially on cold start
• Engine stalls after starting
• May be stored alongside P0016, P0017, or P0019

Most Common Causes

1. 1

   Stretched or jumped timing chain (Bank 2)

   Timing chain wear or a jumped tooth on the Bank 2 chain run causes the intake cam signal to fall out of phase with the crankshaft signal.

2. 2

   Slipped or damaged Bank 2 intake cam tone ring

   The reluctor ring on the Bank 2 intake cam can slip or crack, generating an incorrect position signal that reads as a correlation error.

3. 3

   Failed Bank 2 intake camshaft position sensor

   A faulty CMP sensor on Bank 2 intake produces a corrupted signal. Confirm sensor integrity before pursuing a timing chain repair.

4. 4

   Corroded or damaged wiring to Bank 2 CMP sensor

   Wiring faults on the Bank 2 intake CMP circuit create signal corruption that mimics a timing correlation error.

5. 5

   Worn Bank 2 timing chain tensioner

   A failed tensioner on the Bank 2 chain run allows slack and intermittent phase shifts between the Bank 2 cam and crank.

How to Diagnose It

1. 1

   Check Stretched or jumped timing chain (Bank 2) — Timing chain wear or a jumped tooth on the Bank 2 chain run causes the intake cam signal to fall out of phase with the crankshaft signal.

2. 2

   Check Slipped or damaged Bank 2 intake cam tone ring — The reluctor ring on the Bank 2 intake cam can slip or crack, generating an incorrect position signal that reads as a correlation error.

3. 3

   Check Failed Bank 2 intake camshaft position sensor — A faulty CMP sensor on Bank 2 intake produces a corrupted signal. Confirm sensor integrity before pursuing a timing chain repair.

4. 4

   Check Corroded or damaged wiring to Bank 2 CMP sensor — Wiring faults on the Bank 2 intake CMP circuit create signal corruption that mimics a timing correlation error.

5. 5

   Check Worn Bank 2 timing chain tensioner — A failed tensioner on the Bank 2 chain run allows slack and intermittent phase shifts between the Bank 2 cam and crank.

How to Fix It

1. 1

   Inspect Bank 2 CMP sensor connector and wiring

   Check the Bank 2 intake cam sensor harness for corrosion and damage before pursuing a mechanical diagnosis.

2. 2

   Test the Bank 2 intake camshaft position sensor

   Scope the Bank 2 intake CMP signal and compare to the CKP pattern. Replace if weak or missing teeth are present.

   Camshaft Position Sensor Bank 2↗
3. 3

   Inspect the Bank 2 intake cam tone ring

   Remove the Bank 2 cam gear and inspect the reluctor ring for slippage or missing teeth.

4. 4

   Inspect Bank 2 timing chain, tensioner, and guides

   Evaluate chain stretch and tensioner condition on the Bank 2 side. Correct any jumped timing before restarting.

   Timing Chain Kit↗Timing Chain Tensioner↗
5. 5

   Clear and verify with live scanner data

   After repairs, monitor Bank 2 intake cam vs. crank correlation live data on a scanner.