× 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

P0641 Diagnostic Trouble Code Discussion for July 2020

5-Volt Reference 1 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 P0641
Help Request Posted
2009 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on VIN: 3GCEK23329
P0641: bad 5 volt ref. ... pressure but had no engine noise.droped off at my shop after, starting and running showed no problem but check engine light was on, had code p0106 p0107 p0174. let truck idle after clearing codes for about 45 min. still no problem after driving about t...
July 10, 2020
2009 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on VIN: 3GCEK23329
P0641: bad 5 volt ref. ... pressure but had no engine noise.droped off at my shop after, starting and running showed no problem but check engine light was on, had code p0106 p0107 p0174. let truck idle after clearing codes for about 45 min. still no problem after driving about t...
July 11, 2020