p0442
Easy Fix
Mazda · SUVs & Crossovers
EVAP System Leak Detected (Small Leak)
Quick Answer
Error code P0442 on your Mazda SUVs & Crossovers means: EVAP 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
Check fuel cap for cracks or loose fit
2
Inspect all EVAP hoses for cracks or disconnections
3
Perform smoke test on EVAP system
4
Test purge control valve operation
5
Replace faulty components as identified
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
EVAP hoses
Purge control valve
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