Join Now
International Automotive Technicians Network

P1639 Diagnostic Trouble Code Discussion for January 2006

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
2000 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMRU15L4Y
... finally got it to take. I now have a P1639 code that won't clear. What do I need to do to get it cleared? I do have the NGS scan tool, if that is what's needed. Thank You!
January 11, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P1639: wrong vid block data. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 23, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P1639: wrong vid block data. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 30, 2006
2000 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMRU15L4Y
... finally got it to take. I now have a P1639 code that won't clear. What do I need to do to get it cleared? I do have the NGS scan tool, if that is what's needed. Thank You!
January 11, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P1639: wrong vid block data. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 23, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P1639: wrong vid block data. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 30, 2006