Questions & Answers for: jeep po455

...po455 for over 3 years. I have changed the gas cap with one from Autozone. It never went off. Runs great and haven't had any problems with it driving or working. Still getting 17 and 21 mpg. I just ...

PO455 odb scan code evap. system large leak. 2003 jeep liberty sport 42,000 miles Where do I start to shoot the problem you need a smoke machine to fill evap sysytem and it will leak smoke out where ...

po455 jeep grand cherokee laredo 2003 that code is for a large evap leak. that system is how the gas tank vents itself so the vapor/fumes don't go into the air. most common cause is refilling while ...

Jeep Liberty plus I have error codes P0442 &P0455. What is wrong? and how can I fix. PO442 & PO455 are for your evap system which has to do with monitoring your fuel tank and fuel vapor system

engine light on. Codes PO455 and PO442? engine light on. Codes PO455 and PO442? There is a pretty good emissions leak somewhere.

...is tight, then make sure the seal is good, if it is, then the leak is somewhere else, usually on Jeeps I find hoses cracked near the canister, so thats where to start if the gas cap is tight and ...

...po455 when engine light came on. Code says had gross leak in evap system. Tried gas cap replacment. didnt help. priced o2 sensors at auto parts stores but they ALL didnt have any other parts for evap ...

po455 evaporative emission system leak detected(large leak) also MIL command status fail 1000000 hits world wide the gas cap is loose. use a scan tool to reset it , pull battery if losing all other ...

po455. po456 on my 2007 jeep commander what that mean? no engine size stated, so>???? how can we guess. did you look in the FSM book yet, ? it covers all that. it means something is busted. alldata

...Jeep Grand Cherokee running fine til yesterday runs fine then just dies will start back up a few times then won't hooked up code scanner and shows po455 ...