What is a Nissan Primera P12 airbag control unit?
The Nissan Primera P12 airbag control unit is the central safety unit in the vehicle, precisely activating the occupant restraint systems in the event of a collision. It continuously monitors sensors, stores critical crash data, and ensures the proper functioning of all airbag modules to ensure maximum safety.
This electronic module receives signals from impact sensors and triggers the airbags and seat belt pretensioners when necessary.
It also continuously monitors the system status, detects potential errors and saves them for diagnosis.
Why is the Nissan Primera P12 airbag control unit defective?
A Nissan Primera P12 airbag control unit is often defective because it permanently stores crash data after an accident, causing the airbag warning light to remain activated and the system to become disabled. Internal electronic errors, power supply problems, or EEPROM damage can also cause failure, requiring professional repair.
After an impact, the control unit stores indelible crash data, making it unusable for further operation even if there is no physical damage.
Internal defects such as communication errors, memory errors or power supply problems often occur, causing the module to break.
Such failures result in the airbag warning light remaining permanently illuminated and the safety system no longer functioning.
Common error codes for Nissan Primera P12 airbag control unit repair
When repairing the Nissan Primera P12 airbag control unit, common error codes primarily indicate internal problems with the control unit itself, such as communication problems, memory errors, or power supply issues. These B-codes require specific diagnostics to identify and resolve the exact cause of the failure.
These codes relate exclusively to the control unit function and not to external sensors or belt pretensioners.
A professional diagnosis is essential to accurately identify these errors and initiate the necessary repairs.
- B1000 → Control unit communication error → The airbag ECU cannot communicate correctly with other systems.
- B1110 → Airbag control unit internal error → An internal component of the ECU is not functioning properly.
- B1170 → EEPROM error in the airbag control unit → The permanent memory module (EEPROM) of the control unit is damaged or faulty.
- B1200 → Airbag control unit power supply faulty → The electrical supply to the airbag ECU is unstable or interrupted.
- B1320 → Internal memory error → The control unit has problems accessing its internal memory.
What part numbers are available for the Nissan Primera P12 airbag control unit repair?
For the Nissan Primera P12 airbag control unit repair, various original OEM part numbers are relevant, primarily 98820-AV200, 98820-AV21A and the Bosch manufacturer number 0285001420. Another important variant, especially for diesel models, is 98830-AY000 or the corresponding Bosch number 0285003019.
These part numbers are crucial to ensure the compatibility of the replacement part or the unit being repaired.
The numbers 98820-AV200 and 0285001420 occur consistently for various P12 engine versions, including 1.9 dCi diesel engines.
The alternative number 98830-AY000 (Bosch 0285003019) is documented specifically for the 2.2 diesel in model year 2004.
Installation position and compatibility of the Nissan Primera P12 airbag control unit
The Nissan Primera P12 airbag control unit is usually installed in the vehicle's center console, typically under the dashboard or near the center of the vehicle, and is compatible with all Nissan Primera P12 models from 2002 to 2008, both petrol and diesel variants.
The precise installation position ensures optimal detection of impact forces.
The control unit is connected to the rest of the airbag system via specific yellow-marked connectors designed for maximum safety and corrosion-free data transmission.
These connectors have discharge clips that prevent accidental airbag deployment when the connection is disconnected.
It is compatible with all common engine types of the Nissan Primera P12, including petrol and diesel engines such as the 2.2 Di.
| Make | Model | Year of manufacture | Engine types | |---------|---------------|---------------|---------------------------| | Nissan | Primera P12 | 2002 - 2008 | Petrol, Diesel (e.g. 2.2 Di)|This is how the professional Nissan Primera P12 airbag control unit repair works
Professional Nissan Primera P12 airbag control unit repair typically involves erasing crash data and correcting internal errors to restore full functionality of the safety system. This requires specialized diagnostic equipment and technical expertise to ensure safe and reliable operation.
Many workshops offer a repair service that is more cost-effective than buying a new one and often comes with a warranty.
After a professional repair, the airbag control unit is fully operational again and does not necessarily need to be replaced.
The installation of the repaired module should always be carried out by qualified personnel in order not to endanger the safety of the system and to avoid a further failure.