Check Engine Light code 2002 Dodge Ram 4.7L V8

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Brian - 04 Jul 2007 01:18 GMT

Hello -
I have a 2002 Dodge Ram 4.7L V8
I did the on off on off on trick with the key in the ignition and got two
codes for my check engine light

P0442
P1491

The first one is in my Haynes Manual -

EVAP system leak monitor, medium (0.40) leak detected

Question #1 - what does that mean? I was told it is something with my fuel
vapor recovery system and that it may be under a 7/70 warranty on my
emissions of my dodge. Anyone know?

Question #2 - the P1491 code is not in my manual. Anyone know what that
code is? I was told it might be a cooling fan fuse.

Thanks for any help

Brian

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Ed H. - 04 Jul 2007 02:05 GMT

> Hello -
> I have a 2002 Dodge Ram 4.7L V8
[quoted text clipped - 12 lines]
> vapor recovery system and that it may be under a 7/70 warranty on my
> emissions of my dodge. Anyone know?

Could be a loose gas cap. If it's something else, it should be covered by
the emmissions warranty.

> Question #2 - the P1491 code is not in my manual. Anyone know what that
> code is? I was told it might be a cooling fan fuse.

According to my ODB2 Reader documentation, for Chrysler, that's "Radiator
fan relay control circuit." Could be the fuse or the relay.

> Thanks for any help
>
> Brian

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Brian - 04 Jul 2007 15:06 GMT

I know how to replace a fuse; what's involved in changing a relay?

> > Hello -
> > I have a 2002 Dodge Ram 4.7L V8
[quoted text clipped - 24 lines]
> >
> > Brian

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TBone - 04 Jul 2007 15:33 GMT

The same as replacing a fuse, just pull it out and plug the new one in.

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If at first you don't succeed, you're not cut out for skydiving

> I know how to replace a fuse; what's involved in changing a relay?
>
[quoted text clipped - 27 lines]
> > >
> > > Brian

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