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06 liberty both codes P0440 and P0302 any ideas? #2444242
01/31/18 09:21 PM
01/31/18 09:21 PM
Joined: Jun 2003
Posts: 13,854
Willow Grove PA
71sat440 Offline OP
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71sat440  Offline OP
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Willow Grove PA
It was throwing code P0440 a couple weeks ago, I made arrangements to take it in then it went out by itself and was gone. Dash light came on yesterday and now its throwing both codes.
Any ideas?

Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444326
01/31/18 11:13 PM
01/31/18 11:13 PM
Joined: Feb 2003
Posts: 2,134
tucson az
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frank Offline
top fuel
frank  Offline
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Joined: Feb 2003
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tucson az
Per my 06 Liberty FSM:

P0302 - Misfire detected cylinder #2
P0440 - General evaporative system failurer

Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444478
02/01/18 04:08 AM
02/01/18 04:08 AM
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Posts: 12,696
md
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mopars4ever Offline
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md
My relative had the evap leak and it was the fuel pump cracked on the top.

Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444672
02/01/18 03:05 PM
02/01/18 03:05 PM
Joined: Jan 2003
Posts: 16,746
So Near, Yet So Far
topside Offline
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topside  Offline
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So Near, Yet So Far
Codes should stay in memory so they can be retrieved & investigated.
Misfire could be tired plug or wire, maybe dirty injector; evap leak could be loose gas cap, cracked hose, etc.

Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444675
02/01/18 03:12 PM
02/01/18 03:12 PM
Joined: Dec 2009
Posts: 15,415
in a cattle trailer down by th...
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Guitar Jones Online laugh2
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in a cattle trailer down by th...
Chrysler products are well known for evap and purge system hoses rotting away. Check every piece of rubber hose in those systems first.


I raise chickens, so I am literally a chicken tender.

The Scamp is sold, now just two old trucks and one new one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. NV4500 coming soon.
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Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444882
02/01/18 09:56 PM
02/01/18 09:56 PM
Joined: Jun 2003
Posts: 13,854
Willow Grove PA
71sat440 Offline OP
I Live Here
71sat440  Offline OP
I Live Here

Joined: Jun 2003
Posts: 13,854
Willow Grove PA
Today I was told it was the purge valve, got one on order from Jeep for $65. Parts store had one that was $110 in stock, or Dorman that was $55 but would take 2 days. Jeep will have tomorrow. I remember on our 2001 T@C all the little pieces of hose were rotted under the battery tray.

Re: 06 liberty both codes P0440 and P0302 any ideas? [Re: 71sat440] #2444905
02/01/18 10:44 PM
02/01/18 10:44 PM
Joined: Jan 2003
Posts: 2,156
New York
rarefish Offline
top fuel
rarefish  Offline
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Joined: Jan 2003
Posts: 2,156
New York
I had the evap code on my 01 Dakota some years back and I had several hoses that had starting to crack right where they are terminated. The code came back a second time later and the caused this time was a corroded fuel filler neck.
Also a common problem in the salt belt Northern states.







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