Fix P0442 code Chrysler Vehicles
Many shops are reporting problems with P0442 code Chrysler Vehicles. The computer puts the system into a leak detection mode and pulls a vacuum on the gas tank, venting hoses, and charcoal canister. Then it watches a vacuum sensor to figure out whether the leak is a large or small one. The most common P0442 code is found right in the rubber hoses right at the charcoal canister. To diagnose a P0442 code, lower the canister and check the condition of the rubber hoses. If you see ANY cracks, replace the hoses. It will take the computer a while to run the test again before it will clear the code and turn off the check engine light.
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