Key on ,off ,on,off,on and count the flashes of the check engine light
then at least we will have a code number to work with.
SOURCE: labor time to replace a faulty water pump in 05 Gran Caravan 3.8
Try (repairpal.com) for estimate for your particular area. You may have to enter Grand Caravan to get the 3.8L engine .
I'm thinking 2 hrs.
SOURCE: How to read trouble codes on 1998 Toyota Camry w/o scan tool
You can go to any auto parts store and they will usually read them for you for free. Around the late 90s many of the auto computer systems began requiring scan tools rather than the older method of simply flashing lights on the dash if you jumpered the correct pins.
SOURCE: Diagnostic Codes for a 1998 Dodge Caravan
could be a bad pcm, but a shorted or open bus wire is also possible. this kind of diagnosis is very time consuming chasing wires and would best be done with a shop manual with wiring diagrams and flow charts
SOURCE: What is the diagnostic codes P 0700 P1684 p0442
P0700: EATX Controller DTC present
P1684: Battery was desconnected
P0442: EVAP leak monitor medium (.040). Leak detected.
P0455: EVAP leak monitor large. Leak detected.
P0456: EVAP leak monitor small (.020). Leak detected.
I suggest check the lines and flow it down to the ldp (leak detection pump) that is just behind the steering gear under the van It has a wire connector and 2 large EVAP hoses. look for any split or crack then follow the lines back to the tank. Even a small crack is a leak.
Hope helped with this. Remember rated this help. Good luck.
SOURCE: 2005 dodge caravan diagnostic code p0404, please
p0404 is-egr flow ckt range/performance, check egr, remove from vehicle and clean out carbon from valve and where it mounts on engine. also check the wireing connector and wire to valve. if this dosnt work, replace valve,
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