p0442
Moderate
Lexus · Sedans
Evaporative Emission System Leak Detected (small leak)
Quick Answer
Error code P0442 on your Lexus Sedans means: Evaporative Emission 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
Inspect and tighten gas cap
2
Check fuel lines for visible damage
3
Inspect charcoal canister seals
4
Test purge control valve with vacuum
5
Smoke test fuel system if needed
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
Fuel line clamps
Purge valve seals
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