p0456
Moderate
Chrysler · Minivans & Sedans
Evaporative Emission Control System Leak Detected (small leak)
Quick Answer
Error code P0456 on your Chrysler Minivans & Sedans means: Evaporative Emission Control System Leak Detected (small leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Verify fuel cap is seated properly and replace if needed
2
Inspect vapor hoses for small cracks
3
Test purge control valve operation
4
Perform smoke test for leak detection
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Fuel cap
Vapor hose segments
Purge valve
Hose clamps
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