P1639 Diagnostic Trouble Code Discussion for November 2019
5-Volt Reference 'B' 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 P1639
| Help Request | Posted | |
| 2014 Ford F-150 Lariat 5.0L Poor Fuel Economy VIN: 1FTFW1EFXE P1639: Vehicle ID Corrupted/not programmed. New customer to us. Original complaint was very hard to start and poor mileage. Dealer replaced whole lotta parts- some under warranty, some customer pay. He never got resolution to either hard start,or poor mileage. What I noticed was flex fuel learned wa... |
November 18, 2019 |
