Jeep Repair Problems? Ask a Mechanic for Answers ASAP
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The most common problem associated with the code 31 (P0443) is going to be in the area of the EVAP Purge Solenoid. Carefully inspect the vacuum lines for any cracks, holes or loose/missing connection. Inspect the wire harness and connector for any loose, broken or damaged wires. If the visual inspection checks ok, suspect a faulty solenoid.