B1129

B1129 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1129 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 B1129 Fault Code Meaning :

Ford B1129 Symptoms :

Ford B1129 Reasons :

How To Fix Ford B1129 Trouble Code ?

Which Ford cars have the code B1129?

  • B1129 Ford Aerostar
  • B1129 Ford Bronco
  • B1129 Ford C-Max
  • B1129 Ford C-Max Energi
  • B1129 Ford C-Max Hybrid
  • B1129 Ford Contour
  • B1129 Ford Crown Victoria
  • B1129 Ford EcoSport
  • B1129 Ford Econoline
  • B1129 Ford Edge
  • B1129 Ford Escape
  • B1129 Ford Escape Hybrid
  • B1129 Ford Escort
  • B1129 Ford Everest
  • B1129 Ford Excursion
  • B1129 Ford Expedition
  • B1129 Ford Explorer
  • B1129 Ford Explorer Sport Trac
  • B1129 Ford F-150
  • B1129 Ford F-250
  • B1129 Ford F-350
  • B1129 Ford Fiesta
  • B1129 Ford Flex
  • B1129 Ford Focus
  • B1129 Ford Focus Electric
  • B1129 Ford Freestar
  • B1129 Ford Freestyle
  • B1129 Ford Fusion
  • B1129 Ford Fusion Energi
  • B1129 Ford Fusion Hybrid
  • B1129 Ford Fusion Plug-In Hybrid
  • B1129 Ford GT
  • B1129 Ford Mustang
  • B1129 Ford Mustang Mach-E
  • B1129 Ford Mystique
  • B1129 Ford Probe
  • B1129 Ford Ranger
  • B1129 Ford Taurus
  • B1129 Ford Taurus X
  • B1129 Ford Tempo
  • B1129 Ford Thunderbird
  • B1129 Ford Transit
  • B1129 Ford Transit Connect
  • B1129 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.