Rick's Free Auto Repair Advice

P0456 EVAP System Small Leak Chrysler vehicles

Fix code P0456 EVAP System Small Leak Chrysler vehicles

If you have a P0456 EVAP System Small Leak Chrysler vehicles trouble code, this post will help you understand what it is and how to fix it.

This code can indicate a leak in a small rubber hose or a malfunction in the LDP (leak detection pump). I’ve included the instructions for testing the LDP in another article on this site. But since it’s fairly involved, I suggest you start your diagnostics by checking hoses. They are the most common failure. You can also read this to understand how the entire EVAP system works on a Chrysler vehicle

Shops report cracks in the following hoses, in order of importance:

1) In the hose between the plastic purge line and the steel line that runs under the vehicle. The connection is under the air cleaner.

2) Rubber hose by the throttle plate.

3) Split rubber hose at the charcoal canister


© 2012 Rick Muscoplat

Posted on by Rick Muscoplat

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