Airbag control unit with part number 98820-6CD1B

What does the airbag control unit 98820-6CD1B do?

The airbag control unit 98820-6CD1B controls the restraint system (SRS) of Nissan. In a collision, it evaluates the crash sensors and decides within milliseconds on the triggering of airbags and seatbelt pretensioners.

During operation, it monitors all components of the system. Reported faults appear via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 98820-6CD1B fail?

The most common cause for the 98820-6CD1B is crash data stored after an accident, even if no airbag has fired. An ordinary diagnostic tool cannot erase it. In addition, ageing electronics, cold solder joints, moisture and corrosion, as well as voltage spikes, can cause problems.

Crash data can be held in the memory regardless of how serious the incident was. An airbag does not have to have fired for this.

The other causes are technical in nature. Components age, solder joints can go cold, and moisture damages contacts. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 98820-6CD1B is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool cannot communicate with the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not trigger. This finding should therefore be clarified promptly.

The warning light shows the fault. It is the signal you should watch for.

Which vehicles is the 98820-6CD1B fitted in?

The 98820-6CD1B is fitted in these vehicles: Nissan Altima L34 (2018-2022).

The list of vehicles recorded for this part number follows directly below.

• Nissan Altima L34 (2018-2022)

A comparison of the part number on the label of the removed unit with this page shows that you have the correct unit. Before that, have the fault memory read out, because only the log shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-3TA9C, 98820-9HS9A, 98820-9HS9B.

How does the repair of the 98820-6CD1B work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only then remove the control unit. Create a repair order online. Processing at Airbag24 takes 3–4 working days.

The sequence is binding for your safety. Only after removal do you pack the unit and send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Your own unit is then returned to you.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 98820-6CD1B get to Airbag24?

You send the 98820-6CD1B as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes into the parcel, and the unit must be packed shock-proof.