My malfunction indicator light came on in my 01 Truck and called the
service department and they said no big deal just bring it in when you
can. With a little investigation I found that you can check the code by
cycling the ingnition from on - acc -- on -- acc -- on and it will
display on the odomiter.
My code was 455 which is EVAP (evaperoration system leak detection).
Often caused by something as simple as a gas cap left off. Problem is
Dodge does not seem to offer a user friendly way to reset the code.
Called a firend that does have access to a code reader that would
re-set it, but he said just disconnect the battery cables and short
them together for a couple of minutes (we are talking about the cables,
not involving the battery in any way!).
Worked and the stupid litle light is off. Might come back on if there
is a real problem but would hate a trip to the shop for a false alarm.
Strangely enough I had the same problem with my '01 Dakota 3.9L last week.
I unhooked the battery and while I was waiting I looked for bad hoses or any
other obvious problems, and found none.
I read somewhere that the gas caps can develop some rust inside (a spring?)
and cause problems. They said that the more your vehicle gets wet, either
from rain or from frequent washing, the faster this can happen. I can see
what looks like rust coming from the hole in the middle of the cap.My light
is still out but I will probably replace the gas cap to be safe. This was
the first time the check-engine light has come on since I bought the truck
I havent driven mine enough to see if it will come on again but every
thing I have read and the mechanic I talked to said "is your gas cap
off". I am going to replace mine too but wait a while and see if it
comes on again. Might even leave it off before to see if that forces it
on now that I know how to reset it.
Gary B wrote:
The gas cap o-ring starts to develope a flat spot and produces a small leak
not allowing the fuel vapor system to build up pressure. I use Dow Corinig
#55 O-Ring lube on every o-ring from fuel to water the stuff is a perminent
lube. It keeps the o-ring live and helps swell it to keep a seal. Been
using it for years and I tried it on my 98 Ram gas cap several years back
and solved the problem. Now I put it on all my gas cap o-rings and never
had an issue.
Also, rust can develop around the seal area causing a leak no matter how
many gas caps people buy they still leak. Remove the rust with steal wool
and use a paint made for fuel/chemical resistance to protect. Some of the
automanufacturers are going to SST fuel necks which solves the problem, the
majority of the US auto makers just use galvanized steel which eventually
On 23 Sep 2005 13:40:04 -0700, email@example.com wrote:
when we got our dakota in 02, (it's an 01 but we bought it used), we had the gas
cap problem a few times and it drove me crazy until I found out that improper
tightening was causing it..
As I remember, though, the reason that it drove me nutz was that it would go
away for a while, then come back.. like the next time I filled the tank and
didn't tighten it enough...
I never had the code cleared, but don't think that it stayed for 50 cycles or
whatever, like some codes do..
Please remove splinters before emailing
After reseting my light it was fine for a week then left the cap loose
on purpose. Light came on after a few miles and has not gone back off.
Have to reset it again. Irritating that such a small thing would
probably force most people into the dealer.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.