P18B4

P18B4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P18B4 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P18B4 Fault Code Meaning :

Ford P18B4 Symptoms :

Ford P18B4 Reasons :

How To Fix Ford P18B4 Trouble Code ?

Which Ford cars have the code P18B4?

  • P18B4 Ford Aerostar
  • P18B4 Ford Bronco
  • P18B4 Ford C-Max
  • P18B4 Ford C-Max Energi
  • P18B4 Ford C-Max Hybrid
  • P18B4 Ford Contour
  • P18B4 Ford Crown Victoria
  • P18B4 Ford EcoSport
  • P18B4 Ford Econoline
  • P18B4 Ford Edge
  • P18B4 Ford Escape
  • P18B4 Ford Escape Hybrid
  • P18B4 Ford Escort
  • P18B4 Ford Everest
  • P18B4 Ford Excursion
  • P18B4 Ford Expedition
  • P18B4 Ford Explorer
  • P18B4 Ford Explorer Sport Trac
  • P18B4 Ford F-150
  • P18B4 Ford F-250
  • P18B4 Ford F-350
  • P18B4 Ford Fiesta
  • P18B4 Ford Flex
  • P18B4 Ford Focus
  • P18B4 Ford Focus Electric
  • P18B4 Ford Freestar
  • P18B4 Ford Freestyle
  • P18B4 Ford Fusion
  • P18B4 Ford Fusion Energi
  • P18B4 Ford Fusion Hybrid
  • P18B4 Ford Fusion Plug-In Hybrid
  • P18B4 Ford GT
  • P18B4 Ford Mustang
  • P18B4 Ford Mustang Mach-E
  • P18B4 Ford Mystique
  • P18B4 Ford Probe
  • P18B4 Ford Ranger
  • P18B4 Ford Taurus
  • P18B4 Ford Taurus X
  • P18B4 Ford Tempo
  • P18B4 Ford Thunderbird
  • P18B4 Ford Transit
  • P18B4 Ford Transit Connect
  • P18B4 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.