Airbag control unit with part number 98820-6CA1B

What does the airbag control unit 98820-6CA1B do?

The airbag control unit 98820-6CA1B controls the restraint system (SRS) of Nissan. It evaluates the crash sensors and determines in a crash, within a fraction of a second, which airbags and seatbelt pretensioners are triggered.

It also monitors the entire system continuously and reports faults via the airbag warning light.

A crash leaves its mark on the unit: it stores crash data and locks itself afterwards. You cannot see this while driving.

Why does the control unit 98820-6CA1B fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes include ageing electronics, cold solder joints, moisture or corrosion at plugs, and voltage spikes, for example from jump-starting.

The crash data cannot be seen from outside. A vehicle that looks unremarkable therefore does not rule it out.

The other causes develop gradually. Components age, solder joints can go cold, and moisture attacks plug connections. A weak battery can also cause voltage spikes that stress the electronics.

How can you tell that the 98820-6CA1B is defective?

The airbag warning light lights up permanently or intermittently, and an error message appears in the instrument cluster. A diagnostic tool also gets no connection to control unit 98820-6CA1B. The airbags and seatbelt pretensioners may then not deploy in an emergency.

Such signs should be clarified promptly so that the system can be checked.

• Airbag warning light lit permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool cannot find the control unit
• Fault memory cannot be cleared

Which vehicles is the 98820-6CA1B fitted in?

The control unit 98820-6CA1B is fitted in these vehicles: Nissan Altima L34 (2018-2022).

The vehicles are listed here:

• Nissan Altima L34 (2018-2022)

Compare the part number on the label with this page to check that you have the right unit. Have the fault memory read out beforehand, as only that shows whether the control unit is defective or whether 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 98820-6CA1B work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove control unit 98820-6CA1B. Create the repair order online and send the unit in well packed.

At Airbag24 the unit is checked on the test bench, defective components are replaced, the crash data is erased and a function test is carried out. The unit is then returned to you.

Processing usually takes 3–4 working days. 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 98820-6CA1B get to Airbag24?

Either you send control unit 98820-6CA1B as a parcel to Airbag24, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

The printed repair order goes in the parcel, and the unit is packed shockproof.