4D99 — DPF System
Severity: Warning
Can you drive? With caution: limp mode possible, have it checked soon
Make: BMW
| Meaning | DPF System. |
| System | DDE 5 |
| Family | Manufacturer-native code |
Frequently asked questions
What does code 4D99 mean?
DPF System. DPF System. (System: DDE 5)
Can I keep driving with code 4D99 active?
With caution: limp mode possible, have it checked soon
How do you fix code 4D99?
Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.
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Where to get it fixed
Related codes
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- 4D0A — Generator Faulty
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