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Ron Z.
Ron Z., - Jeep Tech -
Category: Jeep
Satisfied Customers: 17788
Experience:  18+yrs experience. State Inspector & Jeep Diagnostics/Repair
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96 jeep grand cherokee limited: dtc 31 incorrect purge flow

Customer Question

i have a 96 jeep grand cherokee limited with check engine light. got dtc 31 incorrect purge flow. need help.
Submitted: 5 years ago.
Category: Jeep
Expert:  Ron Z. replied 5 years ago.

Welcome to! My name is DriveFast71(Ron) and I will do my best to answer all of your questions completely and accurately.


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.


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