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Nissan Micra K12 airbag control unit repair
Nissan Micra K12 airbag control unit repair at Airbag24
Airbag24 repairs defective airbag control units professionally and affordably. Both private customers and workshops can order without registration and benefit from fast processing, 2 years' statutory liability for defects and plug&play installation.
Airbag24 works with state-of-the-art diagnostic technology and specialised repair processes. Because defective control units often involve only individual components, a professional overhaul can be considerably cheaper than buying new.
Our advantages: no registration required, a direct online ordering process for B2B and B2C customers, express shipping and comprehensive quality testing. The repaired control unit works like a new part.
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Our estimated repair time for this product is about: 3–4 business days
Which repair matches your fault code?
Below your code you can see what needs to be done.
Your error code isn't listed? The list isn't complete – we can usually repair it anyway. Simply create a repair order, or ask us first.
Specifications
- Make
- Nissan
- Model
- Nissan Micra
- Series
- K12 (2003-2005)K12 Facelift (2005-2010)

Shipping & repair from Germany
Airbag24 repairs your component in Berlin — usually within 3–4 working days.
Standard shipping within Germany is free; we normally return your part by UPS.
You pay for and insure the inbound shipment to us. On explicit request we ship by express — the extra cost is borne by the customer.
If you withdraw from the contract, you bear the cost of returning the item.
Google reviews
4.8What is a Nissan Micra K12 airbag control unit?
The Nissan Micra K12 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It precisely monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle, which is crucial for safety.
This control unit, often supplied by Bosch, is the heart of your Nissan Micra III (K12)'s passive safety system. It processes signals from acceleration and impact sensors.
Its primary function is to quickly and reliably deploy the airbags and seatbelt pretensioners in the event of an impact. After an accident, it stores important crash data that is essential for accident analysis and system diagnostics.
Why is the Nissan Micra K12 airbag control unit defective?
A Nissan Micra K12 airbag control unit often fails because crash data is permanently stored after an accident, resulting in the system being locked. Internal electronic errors, a short circuit, or communication problems can also lead to failure, making a professional Nissan Micra K12 airbag control unit repair unavoidable.
This storage of crash data blocks the control unit and causes the airbag warning light to remain permanently illuminated. Deleting the data is only possible with specialized software and expert knowledge.
In addition, age-related wear and tear, moisture, or voltage fluctuations can lead to internal damage. In such cases, a diagnosis is necessary to accurately identify the problem and repair the airbag control unit.
Common error codes for Nissan Micra K12 airbag control unit repair
Typical error codes indicating a faulty Nissan Micra K12 airbag control unit include specific B-codes related directly to the control unit. These typically cause the airbag warning light to illuminate and require professional diagnosis and repair.
- B1049 → Control unit blocked / communication error → Typical when the system is blocked after an accident or when there are internal communication problems.
- B1059 → Control unit defective / crash data stored → Indicates that crash data is stored in the memory and the control unit is locked.
- B1139 → Control unit defective → A general error code indicating internal damage or failure of the unit.
What part numbers are available for the Nissan Micra K12 airbag control unit repair?
For Nissan Micra K12 airbag control unit repairs, various OEM and Bosch part numbers are relevant to ensure compatibility with your vehicle model. Correct identification of the part number is crucial for a successful repair or replacement.
Common Nissan OEM part numbers include 28556BC400, 98820BC500, 98820AX502, and 98820AX503. These are specifically designed for the Micra K12 with engine types such as the CR12DE.
Bosch also supplies important original control units with the numbers 0285001852 and 0285001853. These Bosch numbers are often linked to Nissan OEM numbers and are compatible with the vehicle. To repair or replace your defective unit, check the exact part number on your old part.
Based on 241 reviews
What our customers say
„Ok.“
„Works like a charm!“
„VAG airbag control unit with error B2000 00 reliably repaired. Price very high in comparison, but everything worked out. No exact protocol of what was carried out, probably just newly flashed“
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„A great shop, even when there are sometimes problems. There are quick responses and very good help. I can only recommend the shop. Thank you very much“
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„Problem solved :-)“
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„Everything went well“
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„Everything works great“
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„Ultra satisfied with this company. My computer was repaired quickly and works perfectly again! Communication is exemplary (emails, SMS...). Very serious company, thank you!“
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„Uncomplicated, fast, correct.“
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„Airbag control unit sent: the handling of it was immediate and very serious. The returned control unit was fitted without any problem and works perfectly. Very satisfied!“
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„Airbag control unit Fiat 500 was broken. Hard to believe but they can really repair it! Recommendation!!“
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„From the first phone call, the order processing, to the shipping, everything was done very quickly and professionally. Now I still have to send the repaired unit to the Swedish workshop and then hopefully the Honda can f…“
Automatically translated · Original: German
„Ok.“




