Evaporative Emissions System Purge valves come in many shapes and sizes Repair steps will vary depending on the model year and engine. P0455 is a generic diagnostic trouble code, meaning it has the same definition for your Jeep Grand Cherokee as any other vehicle. P0455 Definition: System Gross Leak – Evaporative Emission System But, whenever the check engine light is on, it’s good to deal with the code as soon as possible.Ĭheck that your Grand Cherokee’s gas cap is present and sealing well. P0455 usually is not an immediate threat to the driveability of your Grand Cherokee.
With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 in the Jeep Grand Cherokee is a trouble code that indicates your truck has a LARGE evaporative emissions leak.
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