P991B
P991B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P991B Diagnosis
The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.
Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.
Ford P991B Fault Code Meaning :
Ford P991B Symptoms :
Ford P991B Reasons :
How To Fix Ford P991B Trouble Code ?
Which Ford cars have the code P991B?
- P991B Ford Aerostar
- P991B Ford Bronco
- P991B Ford C-Max
- P991B Ford C-Max Energi
- P991B Ford C-Max Hybrid
- P991B Ford Contour
- P991B Ford Crown Victoria
- P991B Ford EcoSport
- P991B Ford Econoline
- P991B Ford Edge
- P991B Ford Escape
- P991B Ford Escape Hybrid
- P991B Ford Escort
- P991B Ford Everest
- P991B Ford Excursion
- P991B Ford Expedition
- P991B Ford Explorer
- P991B Ford Explorer Sport Trac
- P991B Ford F-150
- P991B Ford F-250
- P991B Ford F-350
- P991B Ford Fiesta
- P991B Ford Flex
- P991B Ford Focus
- P991B Ford Focus Electric
- P991B Ford Freestar
- P991B Ford Freestyle
- P991B Ford Fusion
- P991B Ford Fusion Energi
- P991B Ford Fusion Hybrid
- P991B Ford Fusion Plug-In Hybrid
- P991B Ford GT
- P991B Ford Mustang
- P991B Ford Mustang Mach-E
- P991B Ford Mystique
- P991B Ford Probe
- P991B Ford Ranger
- P991B Ford Taurus
- P991B Ford Taurus X
- P991B Ford Tempo
- P991B Ford Thunderbird
- P991B Ford Transit
- P991B Ford Transit Connect
- P991B 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.