P0022: Camshaft Timing Over-Retarded (Bank 2)
P0022 indicates that the engine control module (ECM) has detected that the intake camshaft timing on Bank 2 is retarded (delayed) beyond the specified range. This is typically caused by a faulty variable valve timing (VVT) solenoid, oil flow issues, or a stretched timing chain. The ECM monitors camshaft position relative to the crankshaft; when the actual timing lags the commanded timing, the code sets. Bank 2 refers to the side of the engine opposite cylinder #1.
01. Most Common Causes
- Faulty VVT solenoid on Bank 2
- Low engine oil level or dirty oil
- Stretched or slipped timing chain/belt
- Worn timing chain tensioner or guides
- Oil passage blockage to VVT actuator
02. Symptoms You Will Notice
- Check Engine Light on
- Rough idle or engine misfire
- Reduced engine power and acceleration
- Poor fuel economy
- Engine may run rough or stall
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P0022 is present; check for other related codes.
Step 2: Inspect engine oil level and condition; change oil and filter if dirty or low.
Step 3: Test the VVT solenoid on Bank 2 for proper operation using a multimeter or scan tool.
Step 4: Check for oil pressure at the VVT solenoid; clean or replace if clogged.
Step 5: Inspect timing chain/belt for stretch or slippage; replace if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as retarded timing can cause engine damage, poor performance, and increased emissions. Have it diagnosed promptly.
How much does it cost to fix?▼
Costs vary: replacing a VVT solenoid is $50-$150; oil change is $30-$70; timing chain replacement can be $500-$1500. Diagnosis is typically $100-$200.