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Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1754
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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2002 dodge dakota, 4.7 liter engine, manual trans. 4WD.

Customer Question

2002 dodge dakota, 4.7 liter engine, manual trans. 4WD. Getting a P1686 code, and a service 4wd light. Reset system, and light stayed off for 30 miles, with no service 4wd light. Back on now, with same lights. 4wd does not engage when light is on, but works fine when i reset the system
Submitted: 1 year ago.
Category: Dodge
Expert:  Jeromy Madison replied 1 year ago.

This is a strange code. It has to do with the skim system, but it seems that when you get this code according to dodge you need to clean the pcm contacts. If that don't work then you need to replace the pcm.

Have you checked the pcm connector?