Airbag control unit with part number 95910-1J400

What is the function of the airbag control unit 95910-1J400?

The airbag control unit with part number 95910-1J400, manufactured by Hyundai/Mobis, serves as the central control module for the entire occupant protection system. It continuously analyzes data from acceleration and yaw rate sensors to precisely deploy airbags and seatbelt pretensioners at the right moment in the event of a collision, thereby ensuring the safety of vehicle occupants.

As the “brain” of the safety system, this module interprets signals from various crash sensors throughout the vehicle. Based on this information, it determines within milliseconds which restraint systems need to be activated to provide optimal protection for occupants.

In addition to controlling front and side airbags, it also manages seatbelt pretensioners and communicates with other vehicle control units—for example, to cut off fuel supply or unlock doors after an accident.

Why does the control unit 95910-1J400 fail?

A common cause of failure for the 95910-1J400 control unit is the storage of crash data following an accident, which prevents the system from being reactivated. Other typical defects include internal hardware malfunctions that result in complete communication loss with diagnostic tools or specific error messages such as “side sensor error,” which cannot be cleared.

After a collision—even minor ones—the control unit locks itself by storing crash data. This is a manufacturer‑imposed safety feature, but it means the unit cannot be reused without professional intervention. Often, replacement is unnecessary; specialists can reset the stored data.

Internal electronic faults are another frequent issue. These may manifest as total communication failure, where the diagnostic tool can no longer recognize the module. Additionally, persistent, non‑erasable error codes indicating external sensors may originate directly from the control unit itself if the external components have already been inspected and deemed functional.

How do you recognize a defect in the airbag control unit 95910-1J400?

The primary symptom of a fault in the 95910-1J400 control unit is a permanently illuminated or intermittently flashing airbag warning light on the instrument cluster. Frequently, the workshop cannot establish a connection to the control unit via the OBD port, or error codes remain stored even after replacing external components.

The airbag warning light is the most obvious indicator. It signals that the safety system is not operational and that airbags would not deploy in the event of a crash.

Another clear sign is when the control unit becomes unreachable by diagnostic equipment. The workshop is then unable to read errors or perform diagnostics, suggesting a serious internal malfunction within the module.

Occasionally, specific error codes—such as those related to side sensors—are also recorded in the fault memory. If these errors persist despite replacing the sensors or verifying the wiring, the root cause is very likely the airbag control unit itself.

In which vehicles is the control unit 95910-1J400 installed?

The airbag control unit 95910-1J400 is primarily used in various generations of the Hyundai i20. Compatibility spans model series PB, GB, and BC. At Airbag24, we also repair this control unit for the Hyundai ix55 of the EN series (2009–2011).

At Airbag24, we have experience repairing part number 95910-1J400 for the following specific models and series:

Hyundai i20 PB (2008–2012) and PB facelift (2012–2014)

Hyundai i20 GB (2014–2018) and GB facelift (2018–2020)

Hyundai i20 BC (2020–2024) and BC facelift (from 2023 onward)

Hyundai ix55 EN (2009–2011)

Originally, this control unit was commonly found in vehicles equipped with the 1.1 CRDi diesel engine (engine code D3FA), as well as in gasoline models with multipoint injection up to 1,248 cc displacement.

How does the repair of the 95910-1J400 work at Airbag24?

Repairing the 95910-1J400 at Airbag24 offers a proven alternative to costly new parts. Upon submission, the unit undergoes electronic analysis, stored crash data is professionally reset, and defective hardware components are replaced. Final tests confirm full functionality, backed by a 12-month warranty.

A crucial prerequisite for successful repair is an accurate fault diagnosis performed by a specialized workshop prior to disassembly. Inspection reports and error logs help ensure that the defect truly lies within the control unit itself, rather than in peripheral components such as sensors, seatbelts, or wiring.

After submission to Airbag24, the repair follows a standardized process. First, an incoming inspection is performed to verify the reported fault. Next, stored crash data is erased, and all relevant electronic components on the circuit board are inspected; if necessary, they are repaired or replaced.

Following successful refurbishment, the control unit undergoes a comprehensive functional test to ensure proper operation. All repairs at Airbag24 are backed by a 12-month warranty.

What shipping options are available at Airbag24?

To send your defective control unit to Airbag24, you can either drop it off yourself free of charge or arrange a convenient UPS pickup. For returning the repaired unit, you have the choice between free UPS standard shipping and optional UPS express shipping—both also available with cash-on-delivery. Self-collection is likewise possible.

For the outbound shipment, you can pack the control unit securely and send it to us yourself, or use UPS’s convenient pickup service, which collects the package directly from your location.

When returning the repaired unit, we offer several options: Free UPS standard shipping is the most common choice. If you’re in a hurry, you can opt for UPS express shipping. Both options are also available with cash-on-delivery.

In addition, you can choose to pick up the repaired control unit directly from our facility—especially convenient if you or your workshop is nearby.