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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P0157 To P0457 >> Diagnosis And Testing >> P0440-General EVAP System Failure >> When Monitored

When Monitored

Engine running after a cold start with the difference between ECT and AAT is less than 10°C (19 F). Fuel Level between 12% and 88% full. Manifold vacuum greater than a calculated minimum value. Ambient Temperature between 4°C and 35°C (40°F and 95°F).