P639B
P639B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P639B Diagnosis
The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.The ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.
Troubleshoot for a wiring short to ground fault on any of the CHM output or BHM output circuits discussed above. The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.
Ford P639B Fault Code Meaning :
Ford P639B Symptoms :
Ford P639B Reasons :
How To Fix Ford P639B Trouble Code ?
Which Ford cars have the code P639B?
- P639B Ford Aerostar
- P639B Ford Bronco
- P639B Ford C-Max
- P639B Ford C-Max Energi
- P639B Ford C-Max Hybrid
- P639B Ford Contour
- P639B Ford Crown Victoria
- P639B Ford EcoSport
- P639B Ford Econoline
- P639B Ford Edge
- P639B Ford Escape
- P639B Ford Escape Hybrid
- P639B Ford Escort
- P639B Ford Everest
- P639B Ford Excursion
- P639B Ford Expedition
- P639B Ford Explorer
- P639B Ford Explorer Sport Trac
- P639B Ford F-150
- P639B Ford F-250
- P639B Ford F-350
- P639B Ford Fiesta
- P639B Ford Flex
- P639B Ford Focus
- P639B Ford Focus Electric
- P639B Ford Freestar
- P639B Ford Freestyle
- P639B Ford Fusion
- P639B Ford Fusion Energi
- P639B Ford Fusion Hybrid
- P639B Ford Fusion Plug-In Hybrid
- P639B Ford GT
- P639B Ford Mustang
- P639B Ford Mustang Mach-E
- P639B Ford Mystique
- P639B Ford Probe
- P639B Ford Ranger
- P639B Ford Taurus
- P639B Ford Taurus X
- P639B Ford Tempo
- P639B Ford Thunderbird
- P639B Ford Transit
- P639B Ford Transit Connect
- P639B Ford Windstar
A code is a fault code and it indicates that something has gone wrong with your car's engine.
It can be caused by many different problems, including a faulty battery, a bad fuel pump, or even a cracked exhaust manifold.
You will need to diagnose the problem before you can fix it. The best way to do this is with an OBD scanner tool.
A scan tool will tell you what needs fixing and how much it will cost in order to fix that particular issue.