What Does P3497 Mean?
The PCM detected a fault in the cylinder deactivation system for Bank 2 (the cylinder bank opposite Bank 1, typically passenger side). This is a general fault code indicating overall system malfunction rather than a specific cylinder issue.
Common Causes
30%
Low or incorrect viscosity engine oil affecting hydraulic valve lifters
25%
Faulty cylinder deactivation solenoid valve for Bank 2
20%
Mechanical failure of multiple valve lifters on Bank 2
15%
Blocked oil passages or galleries to Bank 2
10%
Failed PCM or software calibration issue
Diagnostic Steps
1
Step 1: Check engine oil level, condition, and verify correct viscosity specification is being used
2
Step 2: Monitor cylinder deactivation system operation with scan tool; observe which cylinders are affected on Bank 2
3
Step 3: Check for additional DTCs related to specific cylinders on Bank 2 (cylinders 2, 4, 6, 8, 10, 12)
4
Step 4: Test oil pressure at operating temperature and verify adequate pressure for hydraulic lifter operation
5
Step 5: Remove valve cover from Bank 2 and inspect lifter mechanism operation and condition; check for stuck lifters
Estimated Repair Cost
$250 - $2,000
Parts + labor, varies by vehicle and location
The PCM detected a fault in the cylinder deactivation system for Bank 2 (the cylinder bank opposite Bank 1, typically passenger side). This is a general fault code indicating overall system malfunction rather than a specific cylinder issue.
The most common cause of P3497 (Cylinder Deactivation System Bank 2) is: Low or incorrect viscosity engine oil affecting hydraulic valve lifters
Typical repair costs for P3497 range from $250 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving but may experience rough idle, reduced fuel economy, and loss of power. Prolonged operation may lead to catalytic converter damage or increased engine wear.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P3497 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing/Cylinder Deactivation
Difficulty
Type
Generic (SAE)
Recommended Tools
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