P00BD Mass or Volume Air Flow “A” Circuit Range/Performance – Air Flow Too High
Technical Description
P00BD Mass or Volume Air Flow "A" Circuit Range/Performance – Air Flow Too High
What does that mean?
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.). Although generic, the specific repair steps may vary depending on year, make, model, and/or powertrain.
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. 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 MAF may also be called a Volume Air Flow sensor.
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.
Basically this P00BD diagnostic trouble code (DTC) means that there is a problem with the Mass or Volume Air Flow (MAF) "A" sensor circuit. The PCM detects that the actual MAF sensor frequency signal 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.
Note the "A" part of this code description. That letter denotes either part of the sensor or circuit, or even a single MAF sensor if the vehicle has more than one.
Note: Some MAF sensors also incorporate an air temperature sensor, which is another value used by the PCM for optimal engine operation.
Photo of a MAF sensor:
Symptoms
Symptoms of a P00BD code may include:
Possible P00BD Causes
Potential causes for this trouble code may include:
Note that other codes may be present if you have a P00BD. You may have misfire codes or O2 sensor codes, so it’s important to take a "big picture" look at how the systems work together and effect each other when doing a diagnosis.
Diagnostic Steps & Possible Solutions
The best first steps for this P00BD diagnostic code are to check for Technical Service Bulletins (TSBs) that apply to your year/make/model/engine, and then do a visual inspection of the wiring and system components.
Possible diagnostic and repair steps include:
If you do need to replace the MAF sensor, we recommend using an original equipment OEM one from the manufacturer rather than buying an aftermarket part.
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Let us fix your problem. You are most welcome our diagnosis experts have in most cases the knowledge and skills to find the cause of the error code p00bd and to solve the problems.
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"Delete Error Code Permanently, Disable DTC Error Code Function for p00bd in the ECU"
In extreme cases, we even have the option to permanently remove the specific DTC p00bd and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.
Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p00bd.