Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI2001MIRAGE LS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TESTSDTC P0455: EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM LARGE LEAK DETECTEDPROBABLE CAUSES
2001 Mitsubishi Mirage LS, 4D Sedan, Standard
Probable Causes
2001 Mitsubishi Mirage LS, 4D Sedan, StandardSECTION Probable Causes
- Fuel filler cap improperly tightened or missing.
- Improper fuel cap relief pressure.
- Fuel overflow limiter valve failed.
- Purge line or vapor line clogged.
- Leak in fuel tank, purge line or vapor line.
- Purge solenoid failed.
- Ventilation solenoid failed.
- Fuel Tank Differential Pressure (FTDP) sensor failed.
- Leak in EVAP canister.
- EVAP canister clogged.
- Incorrect fuel used.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.