Airbag control unit with part number 98820-AV200

What is the function of the Airbag Control Unit 98820-AV200?

The Airbag Control Unit 98820-AV200 is the central control module for the occupant protection system in numerous Nissan models. It processes data from crash sensors and is responsible for precisely and promptly deploying airbags and seatbelt pretensioners in the event of a collision, thereby protecting occupants.

As the “brain” of the restraint system, this module continuously communicates with the vehicle’s satellite and acceleration sensors. Based on these signals, it determines whether and how extensively the safety systems should be activated.

In addition to its primary deployment function, the control unit constantly monitors all connected components—such as airbags, seatbelt pretensioners, and sensors—for proper operation. Any detected fault is immediately logged in its internal memory and signaled to the driver via the airbag warning light.

What types of defects occur in the 98820-AV200?

Defects in the 98820-AV200 often manifest as internally stored crash data after an accident, which can prevent further functionality. Other causes include internal electronic component failures that lead to communication interruptions or persistent error codes such as B1049, B1052, or B1059.

A common cause of failure is the storage of crash data. Following a collision, the control unit locks itself internally to prevent unintended re‑deployment. This condition cannot be cleared using standard diagnostic tools and requires specialized electronic repair.

Internal hardware defects are also a frequent source of issues. Faulty components on the circuit board can result in short circuits or open circuits, which appear as error codes like B1049 (circuit interruption) or B1052 (short circuit).

The control unit is also known under alternative part numbers 98820-AV21A, 98820AV200, 98820AV21A, 8789243U00, 2855653U00, and 285561PA0B, which offer identical functionality and may present similar defect patterns.

How do you recognize a defect in the 98820-AV200?

A defect in the Airbag Control Unit 98820-AV200 primarily shows up as the airbag warning light remaining steadily illuminated or flashing intermittently on the instrument panel. Often, no communication can be established via diagnostic equipment, or unerasable error codes appear.

The most obvious sign is an active airbag warning light. This indicates a fault in the safety system and results in failure during the main vehicle inspection (TÜV).

In many cases, the control unit becomes inaccessible to workshop diagnostics. Attempts to read the fault memory fail because the module no longer responds to requests through the OBD interface.

When error codes are read, specific messages such as B1059 (airbag system malfunction) or indications of faulty connections—e.g., to the side airbag—point directly to an internal problem within the control unit, provided the wiring and components themselves remain intact.

In which vehicles is the 98820-AV200 control unit installed?

The Airbag Control Unit with part number 98820-AV200 is fitted across a wide range of Nissan vehicles, including models such as the Tiida, Almera, Primera, Altima, Maxima, Skyline, Terrano, and Serena spanning multiple generations and model years.

At Airbag24, we repair this control unit for numerous Nissan models. Precise identification is crucial for successful repair.

The part number 98820-AV200 can be found in the following models:

Nissan Almera N17 (2011–2020), Altima L32 (2006–2012), Maxima A32 (1995–2000), Maxima A33 (2000–2004), Maxima A36 (2015–2023), Primera P12 (2002–2007), Serena C24 (1999–2005), Serena C26 (2010–2016), Serena C27 (2016–2022), Skyline V35 (2001–2006), Skyline V37 (from 2014), Terrano D10, and Tiida C12 (from 2011).

How does the repair of the 98820-AV200 proceed?

The repair of the 98820-AV200 involves professional electronic analysis, resetting stored crash data, and replacing defective components. After submission, the control unit is refurbished, thoroughly tested, and returned ready for installation, complete with 2 years' statutory liability for defects.

Before removal, a qualified workshop should verify whether the fault lies definitively within the control unit itself. This avoids unnecessary expenses and ensures that other components—such as sensors or wiring harnesses—are not the underlying cause.

Following professional disassembly, please ship the unit securely packaged to Airbag24. Be sure to include the completed repair form and, ideally, a diagnostic report showing the extracted error codes.

At Airbag24, an initial incoming inspection takes place first. Subsequently, crash data is professionally erased, and any hardware defects at the component level are rectified. Final tests confirm the full operational readiness of the control unit.