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2004 jeep grand cherokee code 442/455

The jeep still has the engine light on, and still showing code 442-455 help what else can i check for

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OBD code P0442 Small EVAP leak detected you may need to check the EVAP canister under the vehicle and the purge valve as well check for cracks on the canister or the purge valve and check all the rubber hoses connected to them foe cracks or holes. If you find any damage parts replace them. P0455 which means a large EVAP leak is sometimes referred as the gas cap leak check your gas cap and secure it tight if you still have the code change the gas cap hope this helps after you find and fix the problems get the vehicle to a shop and they will use an OBD scan tool to clear the codes.

Posted on Feb 27, 2014

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4 Suggested Answers

6ya6ya

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: engine code 95 jeep grand cherokee lerado

12 is a battery disconnect within the last 50 start cycles and 55 means the end of the diagnostic cycle.  Basically the computer found nothing wrong. The 12 code may seem incorrect if you haven't disconnected the battery recently, but from my experience the 12 code shows up almost all the time regardless.

Posted on Dec 16, 2008

roniecon

Ronny Bennett Sr.

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SOURCE: code u1411 on jeep grand cherokee

Implausible fuel volume is the code,but it most likely was set from a bad ignition switch.It has to do with the malfunction of the switch,really setting a false code,and there might be another one also,but the ignition switch will correct the problem.

Posted on Jan 22, 2010

GetMeOttaHere

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SOURCE: 2004 jeep grand cherokee overland

P0301 is #1 cylinder misfire detected and is most likely related to a worn spark plug that is need of replacement. All plugs should be replaced if replacing one. Not sure how many miles you have on this vehicle, or if plugs were ever installed, but this is the basic step to take in diagnosis.

Posted on Jun 02, 2010

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