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#FORD FOCUS MASS AIR FLOW SENSOR PROBLEMS CODE#

Note that other codes may be present if you have a P00BD.

MAF sensor electrical harness or wiring problem (open, shorted, frayed, poor connection, etc.).

Dirty or contaminated mass air flow sensor.

#FORD FOCUS MASS AIR FLOW SENSOR PROBLEMS CODE#

Potential causes for this trouble code may include:

Engine hard start or stalling after it starts.

Malfunction indicator lamp (MIL) illumination (a.k.a.

Note: Some MAF sensors also incorporate an air temperature sensor, which is another value used by the PCM for optimal engine operation. That letter denotes either part of the sensor or circuit, or even a single MAF sensor if the vehicle has more than one. Note the "A" part of this code description.

Is not within a predetermined expected range of the calculated MAF value, and in this case it's determined that the air flow is too high. The PCM detects that the actual MAF sensor frequency signal The powertrain control module (PCM) uses that reading along with other sensor parameters to ensure proper fuel delivery at any given time for optimum power and fuel efficiency.īasically this P00BD diagnostic trouble code (DTC) means that there is a problem with the Mass or Volume Air Flow (MAF) The MAF may also be called a Volume Air Flow sensor. The MAF sensor itself only measures a portion of the air entering and that value is used to calculate the total volume and density of air being ingested. The mass air flow (MAF) sensor is a sensor mounted in a vehicle's engine air intake tract downstream from the air filter, and is used to measure the volume and density of air being drawn into the engine. Although generic, the specific repair steps may vary depending on year, make, model, and/or powertrain.

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles with a Mass or Volume Air Flow sensor (BMW, Ford, Mazda, Jaguar, Mini, Land Rover, etc.). P00BD Mass or Volume Air Flow "A" Circuit Range/Performance - Air Flow Too High What does that mean? P00BD MAF "A" Circuit Range/Performance Flow Too High Technical Description