p0496
Easy Fix
Buick · SUVs
Evaporative Emission Control System - High Purge Flow
Quick Answer
Error code P0496 on your Buick SUVs means: Evaporative Emission Control System - High Purge Flow. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Verify code with scanner
2
Inspect and replace fuel cap
3
Check all vacuum hoses for leaks
4
Test purge solenoid operation
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Fuel cap
Purge solenoid valve
Vacuum hoses
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