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Old August 10th, 2019, 22:38
bajabronco bajabronco is offline
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Getting 0455 CEL Evaporative Emission System - what should I look at first?

I am getting the stupid 0455 CEL code fairly frequently now after my Rubicon trip. The gas cap has been changed out and is good. What are the other things I should be checking? I don't smell anything near the fuel tank. Any recommendations on what to check and in what order?
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Old August 11th, 2019, 06:32
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Tim_MN Tim_MN is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

A basic Google search find this:


P0455 JEEP - EVAP System Large Leak

Possible causes
•Missing or loose fuel cap
•Incorrect fuel filler cap used
•Fuel filler cap remains open or fails to close
•Foreign matter caught in fuel filler cap
•EVAP canister or fuel tank leaks
•EVAP system hose leaking
•Fuel tank leaking
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Tim MAY be 100% correct, but why would a person automatically pick him as the expert .....
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Old August 11th, 2019, 06:38
RCP Phx RCP Phx is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

Year would help....
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Old August 11th, 2019, 10:26
bajabronco bajabronco is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

Tim_MN, I know what the error code means, I was just asking if people have had personal experience of solving the code, other than just getting a new gas cap, which I have already done.

RCP Phx, it is a 2000 XJ.
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Old August 11th, 2019, 11:04
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Tim_MN Tim_MN is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

Evap system hoses, hose fittings, and fuel tank hoses, fuel tank vent tube, or the fuel pump assembly lock ring gasket would be likely suspects.
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Quote:
Originally Posted by bimmerjeeper

Go ahead and slam the liftgate down on a blanket, and see how long you are laughing.
Quote:
Originally Posted by soyjer

Tim MAY be 100% correct, but why would a person automatically pick him as the expert .....
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Old August 11th, 2019, 11:35
RCP Phx RCP Phx is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

Check everything at the canister, which is just in front of the gas tank. Then you have another line that runs forward to the purge valve.
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Old August 11th, 2019, 12:52
bajabronco bajabronco is offline
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Re: Getting 0455 CEL Evaporative Emission System - what should I look at first?

Ok thanks RCP Phx & Tim_MN! -It will be a maintenance Sunday on the XJ today. Yesterday was install the new Method beadlock day !



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Old August 12th, 2019, 19:57
97xjnova 97xjnova is offline
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Getting 0455 CEL Evaporative Emission System - what should I look at first?

Check the line from tank to canister


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