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6E2–278 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS Symptoms Initial Diagnosis Default Section(s) Excessive Exhaust Emissions or 1. OBD system check. balance test. 6. EVAP emission canister purge valve. 7. Crankcase ventilation system. EGR System Check, Exhaust Dieseling, Run-On 1. OBD system check. — Backfire 1. OBD system check. balance test. 5. EGR operation, EGR system check. Exhaust System Diagnosis, Evaporative Emissions 1. OBD system check. — Heated Oxygen Sensors 1. OBD system check. Exhaust System |