Nissan X-Trail T31 airbag control unit repair

What is a Nissan X-Trail T31 airbag control unit?

The Nissan X-Trail T31 airbag control unit is the central safety unit that precisely activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the flawless functioning of all airbag modules in the vehicle.

This essential component evaluates signals from crash sensors at lightning speed. It decides within a fraction of a second whether to deploy the airbags and seatbelt pretensioners, saving lives.

It is specifically designed for the second-generation Nissan X-Trail (T31). Compatibility extends to models from 2007 to 2013, including various engine and trim levels.

Why is the Nissan X-Trail T31 airbag control unit defective?

The Nissan X-Trail T31 airbag control unit may fail due to internal malfunctions or damage after an accident. It then stores specific trouble codes such as B1015 or B1139, which activate an airbag warning light and impair the proper functioning of the safety system.

After an accident, the control unit stores indelible crash data. This prevents errors from being erased and signals the need for repair or a reset.

Common causes include internal electronic defects or voltage spikes. Aging processes can also impair function and necessitate a professional Nissan X-Trail T31 airbag control unit repair.

Common error codes for Nissan X-Trail T31 airbag control unit repair

During Nissan X-Trail T31 airbag control unit repairs, specific error codes often occur, indicating internal control unit problems or communication errors. These codes are crucial for a precise diagnosis to identify and resolve the cause of the airbag system malfunction.

• B1000 → Communication error → Indicates a problem in the data connection between the airbag control unit and other vehicle modules.
• B1015 → Airbag system malfunction → Indicates a general malfunction within the airbag control unit itself.
• B1139 → Airbag system malfunction → Also indicates an internal malfunction of the airbag system, often directly caused by the control unit.
• B1049 → Steering wheel airbag error → Indicates a malfunction in the steering wheel airbag circuit detected by the control unit.
• Blink code 12 → Specific control unit error → Is an older diagnostic procedure that reports an error directly in the airbag control unit via a flashing pattern of the warning light.

What part numbers are available for the Nissan X-Trail T31 airbag control unit repair?

For the Nissan X-Trail T31 airbag control unit repair, there are several verified OEM part numbers that exactly match the model series from 2007 to 2013. Knowing these numbers is essential for sourcing the correct replacement part or correctly repairing the existing control unit.

These are exclusively genuine Nissan manufacturer part numbers. These are based on the original OEM condition and have been verified by multiple trusted sources.

All listed numbers are specifically validated for the airbag control unit of the Nissan X-Trail II (T31). They rule out sensors or slip rings as the source of the error.

• 98820JH30A (Nissan)
• 98820JH40A (Nissan)
• 98820JH43A (Nissan)
• 98820JH200 (Nissan)

Some of these control units can be reset by specialized services after an accident or in the event of specific malfunctions. This represents a more cost-effective alternative to a complete replacement to repair the Nissan X-Trail T31 airbag control unit.