P77A1
P77A1 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P77A1 Diagnosis
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.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.
A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.
Ford P77A1 Fault Code Meaning :
Ford P77A1 Symptoms :
Ford P77A1 Reasons :
How To Fix Ford P77A1 Trouble Code ?
Which Ford cars have the code P77A1?
- P77A1 Ford Aerostar
- P77A1 Ford Bronco
- P77A1 Ford C-Max
- P77A1 Ford C-Max Energi
- P77A1 Ford C-Max Hybrid
- P77A1 Ford Contour
- P77A1 Ford Crown Victoria
- P77A1 Ford EcoSport
- P77A1 Ford Econoline
- P77A1 Ford Edge
- P77A1 Ford Escape
- P77A1 Ford Escape Hybrid
- P77A1 Ford Escort
- P77A1 Ford Everest
- P77A1 Ford Excursion
- P77A1 Ford Expedition
- P77A1 Ford Explorer
- P77A1 Ford Explorer Sport Trac
- P77A1 Ford F-150
- P77A1 Ford F-250
- P77A1 Ford F-350
- P77A1 Ford Fiesta
- P77A1 Ford Flex
- P77A1 Ford Focus
- P77A1 Ford Focus Electric
- P77A1 Ford Freestar
- P77A1 Ford Freestyle
- P77A1 Ford Fusion
- P77A1 Ford Fusion Energi
- P77A1 Ford Fusion Hybrid
- P77A1 Ford Fusion Plug-In Hybrid
- P77A1 Ford GT
- P77A1 Ford Mustang
- P77A1 Ford Mustang Mach-E
- P77A1 Ford Mystique
- P77A1 Ford Probe
- P77A1 Ford Ranger
- P77A1 Ford Taurus
- P77A1 Ford Taurus X
- P77A1 Ford Tempo
- P77A1 Ford Thunderbird
- P77A1 Ford Transit
- P77A1 Ford Transit Connect
- P77A1 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.