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Jeep 2.7 crd grand cherokee 2004

6K views 3 replies 4 participants last post by  jimbar1 
#1 ·
Hi All

I have the following fault code appearing all at once, the vehicle runs everyday but the engine light is on:

Codes :

P0340
P0325
P0243
P1242
P0703
P0403
P1685

I need help please, also need to know where I can find a workshop manual for this vehicle. Could i disconnect the battery to cancel these codes ?
 
#3 · (Edited)
Welcome to the garage.
Never tried it myself, but i don´t think the fault codes will reset by disconnecting the battery. You could try it though. Otherwise only by using a scanner.
Indeed better to reset the codes first and check if they come back. There are codes which can be set, but without the "check engine" light coming on. So you could have had most of these codes for some time already and only one of them could have tripped the "check engine" light.
Strange that you also have a knock sensor code, because i don´t think the 2.7 crd has knock sensors.
So reset them first and let us know what you get thereafter.
And regarding service manual, do a search on google. There are free service manuals or at some places you have to pay a bit to download. The 2004 manual i have shows some wiring schematics for diesel as well, but the engine is not in there. I found the diesel suplement somewhere else, but don´t remember anymore where it was.
 
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