21 — Door closing warning device door 2
Severity: Warning
Can you drive? With caution: limp mode possible, have it checked soon
Make: MAN
| Meaning | Door closing warning device door 2. |
| System | MTS |
| Family | Manufacturer-native code |
Frequently asked questions
What does code 21 mean?
Door closing warning device door 2. Door closing warning device door 2. (System: MTS)
Can I keep driving with code 21 active?
With caution: limp mode possible, have it checked soon
How do you fix code 21?
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