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Jeep
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2025
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Grand Cherokee Summit Reserve
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS P0440 To P0463
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DTC Troubleshooting
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P0440 General EVAP System Failure
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Set Condition
Set Condition
The Powertrain Control Module (PCM) initiates an intrusive test to determine the leak size. This DTCs sets when the ESIM Switch did not close during the test period.