× 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

P1638 Diagnostic Trouble Code Discussion for November 2012

TCM Internal - CAN 1 RAM Performance

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 P1638
Help Request Posted
2002 Jaguar X-Type 3.0L No Start, MIL Lamp on, Ign. Switch VIN: SAJGA51C72
P1638: CAN ECM/INST network malfunction. Intermitant problems are always fun to figure out. This is what i do know. When it doesn't start, i notice only the check engine light is on. No other dash lights appear. When it does start all the dash light come on when i turn the key on. I can mess around w...
November 02, 2012