p0456
Easy Fix
Maserati · Sedans & Sports Cars
Evaporative Emission System Leak Detected (very small leak)
Quick Answer
Error code P0456 on your Maserati Sedans & Sports Cars means: Evaporative Emission System Leak Detected (very small leak). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Inspect fuel cap condition and replace if needed
2
Check all hose connections for tightness
3
Look for small cracks in fuel lines
4
Test leak detection pump function
5
Perform pressure test on evaporative system
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 line sections
Hose clamps
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