code 0455 1685


Asked by Aug 25, 2013 at 01:03 PM about the 2003 Jeep Grand Cherokee Laredo

Question type: Maintenance & Repair

my light came on the codes are 0455 1685 cant find them in my book please help.

10 Answers


A code P0455 means one or more of the following has happened: A loose or improperly affixed gas cap or leak or damaged piece in EVAP system. The P1685 code relates to the engine controller having received an invalid key from the SKIM (Smart Key Immobilizer Module)

4 out of 4 people think this is helpful.
Best Answer

What would be evap system ? Also I changed the bcm out of another jeep maby it not reading the old key but it still running fine?


This indicates a fuel vapour leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The EVAP prevents the escape of fuel vapours from a vehicle's fuel system, vapours are routed by hoses to a charcoal canister for storage and cleansing. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapours into the engine. As you've changed the BCM the ECU has identified a part that has not correctly programmed into it's memory and is turning up as an error it may also indicate that the key is not recognised or the transponder is failing.


i have pulled out the passanger door switch because it was shorting out the master door switch u think i should wait till the new switch comes before trying anything else.sorry i bought this pos had it 2 months been working on it for 2 months every time u fix this something else goes wrong i thought jeep was a good #

1 out of 1 people think this is helpful.

you might put original bcm back in and see if skim issue goes away. The skim module is located just below the ign lock cylinder. If this is bad, will have to be replaced and keys programed. The evap code, you need to look for split hoses. there is hoses that go to charcoal canister that are prone to split. if you lay under vehc at left rear tire and look up at the tubes that are up by fuel filter. one goes from steel tube to canister area. this one usually splits at the tee, in the canister area. There is also a large tube that hooks to the large rear port of the canister that splits. to lower the canister, there is one bolt at bottom of metal plate that holds the canister.13mm head. remove it. then look up into the area between metal plate and rear bumper cover. loosen this bolt, it screws into the frame. Then loosen the two bolts by the tire. Then pick up on the rear of metal plate to allow it to be UNHOOKED from the bolt. when the assm. swings down, you can access the evap. hoses. Its kind of a pain. also look at hoses that go to purge solenoid. This is the one on driver fender with the 2 hoses going to it. If you have a locking gas cap that is not a factory one or wrong cap, this can cause a leak as well. if cap fits, it can still leak through the ck. valve in the cap. put your lips around the threads of cap and gently blow. it should hold press. Hope this all helps.........

3 out of 3 people think this is helpful.

Is this skim module something u have to buy from dealer? Thanks on the info

2 out of 2 people think this is helpful.

Well the problem was that I pulled out the passenger door switch because it was bad put it back in everything started working fine it's amazing how the jeep company try to keep u coming back to them and charge u so much . Thanks to everyone for your help


yes, the skim module comes from dealer. Just wondering, do you have a key to vehc. that cant be programed? Like a regular key. This key will set a code if used. IF the skim module is bad, the dealer will need to program it......

1 out of 1 people think this is helpful.

Yes and it was the passenger door switch that I took out because it was bad put in back in everything started working except the windows


Ive seen quite a few pass door modules go bad. I had one that would shut down the network as soon a vehc. was started. the extra charging voltage was just enough to make it freak out. The alt. light would come on. Was fun to find........

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 68,670 nationwide Grand Cherokee listings starting at $864.


Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
Reputation 1,940
#2 Tom Demyan
Tom Demyan
Reputation 1,760
#3 thejeepdoctor
Reputation 1,620
View All

Related Models For Sale

Used Jeep Wrangler
392 Great Deals out of 19,082 listings starting at $3,000
Used Ford Explorer
940 Great Deals out of 73,742 listings starting at $750
Used Dodge Durango
299 Great Deals out of 24,118 listings starting at $1,500
Used Toyota 4Runner
319 Great Deals out of 20,540 listings starting at $2,295
Used Chevrolet Tahoe
775 Great Deals out of 28,432 listings starting at $1,500
Used Ford F-150
2,691 Great Deals out of 211,555 listings starting at $1,000
Used Chevrolet Silverado 1500
2,283 Great Deals out of 155,210 listings starting at $1,395
Used BMW X5
426 Great Deals out of 15,262 listings starting at $2,950
Used Jeep Liberty
264 Great Deals out of 8,132 listings starting at $995
Used Ford Mustang
363 Great Deals out of 44,352 listings starting at $1,000
Used Honda Accord
814 Great Deals out of 81,559 listings starting at $899

Used Cars For Sale

2017 Jeep Grand Cherokee Laredo For Sale
2,879 listings starting at $24,990
2016 Jeep Grand Cherokee Laredo For Sale
500 listings starting at $21,706
2015 Jeep Grand Cherokee Laredo For Sale
181 listings starting at $19,987
2014 Jeep Grand Cherokee Laredo For Sale
10 Great Deals out of 215 listings starting at $15,445
2013 Jeep Grand Cherokee Laredo For Sale
5 Great Deals out of 156 listings starting at $13,982