p0456
Easy Fix
Dodge · SUVs
Evaporative Emission Control System Leak Detected (Small Leak)
Quick Answer
Error code P0456 on your Dodge SUVs means: Evaporative Emission Control System Leak Detected (Small Leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Tighten or replace fuel cap
2
Inspect all fuel vapor lines
3
Check purge valve for minor leaks
4
Scan for other emission codes
5
Clear code after repair and verify
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
Fuel hoses
Purge solenoid
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