BMW Fault Code Lookup - BMWFaultCodes

3FD0

DDE: Mass air flow sensor

d73n57c0

DDE US-diesel fuel

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Fault Information

Fault Code Description
The fault is set if the load correction factor for the measured amount of air exceeds the permissible limit value. Limit value: 0.06

Fault Code Conditions
General Conditions	The fault check takes place continuously. However, a new correction factor is calculated only once per driving cycle and if an enable is issued due to ambient conditions and the current operating point. Control unit voltage: 9.5 V to 16 V.
Terminal Condition
Driving Conditions

Fault Time Condition
No debounce.

Service Plan

Check the following possible fault causes: 1. Check the charge-air temperature sensor for plausibility. 2. Check air intake duct between air cleaner and hot film air mass meter for tightness. 3. Check airflow for tightness (oily, dirty spots are signs of leaks). 4. Check exhaust-gas recirculation valve for tightness, function and fault code entries. If all checks are OK: Replace mass air flow sensor.

Fault Impact
Visit your nearest BMW Service Centre. The fault blocks regeneration of the diesel particulate filter.

Warnings
Warning Lights	Malfunction indicator lamp
Control Center Messages

Service Notes
If leaks were found in the air mass system, the following service function must be carried out: Delete adaptations, air mass system.

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Supply voltage? That's jumping to my eyes.
How old is your battery?
Worn battery can cause plenty of craziness in electrical system.

 

Battery is only 1 month old.

Changed battery, ibs sensor, glow plugs and relay in march

 

what is the resting voltage of the battery? when battery was replaced, was the charging system checked, and the battery properly registered?

 

Yes

 

and the voltage is?

 

12,5