× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1491 Diagnostic Trouble Code Discussion for October 2013

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2001 Jeep Wrangler SE 4.0L MIL Lamp on, alt not charging VIN: 1J4FA59S51
P1491: ldp pump circuit. replaced pcm for no charge condition-works fine for about a week and then quits charging-have checked all wiring to alternator and leak detection pump-replaced alternator for possible internal problem-pcm is reman Chrysler-checked resistance of ldp on car vers...
October 01, 2013