p0456
Moderate
Dodge · Sedans & Muscle Cars
Evaporative Emission System Leak Detected (Small)
Quick Answer
Error code P0456 on your Dodge Sedans & Muscle Cars means: Evaporative Emission System Leak Detected (Small). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Verify fuel cap is tight and undamaged
2
Use smoke test to locate leak source
3
Inspect hose connections for cracks
4
Replace damaged components as found
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 lines
Hose clamps
Vapor solenoid
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