× 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

P1540 Diagnostic Trouble Code Discussion for May 2008

Air Conditioning Refrigerant Over-Pressure - Air Conditioning Disabled


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 P1540
Help Request Posted
1997 Subaru Legacy L 2.2L MIL Lamp on VIN: 4S3BD4355V
P1540: Vehicle Speed Sensor Signal Circuit Malfunction. The car has a flashing MIL and the fans turn on and off.as aoon as the key is turned on.
May 23, 2008