Fuel Vapor Leak Detector Pump (ESIM) Jeep Wrangler JK
Replacing the Emissions Leak Detector Pump (Fuel Vapor Leak Detector) also known as Evaporative System Integrity Module (ESIM) on a 2007-2011 Jeep Wrangler JK 3.8L. A P0456 Code (Evaporative System Leak detected (very small leak) occurred on a 2009 Jeep Wrangler and this was the root cause. In the video it shows other areas that could create this issue. Also, other codes that may occur: P0456, P0457, P0455, P0240, P0440, P0442.
It can also show as a very large leak.
There are other potential causes illustrated in the video which result in these codes.
SAFETY RISKS - To avoid particles or material in your eyes wear Safety Glasses. Wear gloves to protect your hands and be careful working around a hot engine to avoid burns. Wheels should be chocked and emergency brake on.
The part (leak detection pump) used in this video is made by Duralast with Part # ESM1001.
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