What is a Citroën C3-XR I airbag control unit?
The Citroën C3-XR I airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, which is crucial for safety.
It acts as the brain of the passive safety system and collects data from various crash sensors to assess impact direction and intensity.
It analyzes this sensor data in milliseconds to specifically trigger the necessary airbags and belt tensioners.
In addition, the control unit is networked with the on-board diagnostic system (OBD) to detect error conditions and store relevant crash data.
Why is the Citroën C3-XR I airbag control unit defective?
A Citroën C3-XR I airbag control unit can fail for a variety of reasons, often after an accident, as it stores non-erasable crash data. Internal hardware or software errors, power surges, water damage, or age-related wear and tear can also lead to failures that require a Citroën C3-XR I airbag control unit repair.
After an accident, crash data is stored in the airbag control unit, which prevents further use of the system without a professional reset.
Internal control unit errors such as memory problems or communication disruptions often occur, causing the airbag warning light to stay on permanently.
Defects can also be caused by software errors or problems with the control unit coding, which impair the function of the safety system.
Common error codes for Citroën C3-XR I airbag control unit repair
When a Citroën C3-XR I airbag control unit repair is necessary, specific error codes will appear that indicate internal problems or crash data. These codes help identify the exact cause of the malfunction and perform the repair precisely.
- U2601 → Driver airbag stage 1 igniter interruption → Cause: Open circuit in the igniter.
- B1000 → Control unit communication error → Cause: Data transmission problem or internal defect.
- B1020 → Internal error in the airbag control unit → Cause: Hardware or software error in the module.
- B1075 → Internal control unit error, memory error → Cause: Damage to the internal memory or data.
- B1381 → Control unit coding error → Cause: Incorrect or missing programming of the control unit.
- B1400 → Crash data stored in the control unit (cannot be deleted) → Cause: Registered impact that blocks the control unit.
- B1500 → Error in the control unit software → Cause: Corrupt or faulty firmware in the module.
What part numbers are available for the Citroën C3-XR I airbag control unit repair?
For Citroën C3-XR I airbag control unit repairs, there are specific OEM part numbers that ensure compatibility with your vehicle. These numbers are crucial for identifying the correct control unit and ensuring proper function of the safety systems after replacement or repair.
Selecting the correct part number is important, as it may vary slightly depending on the C3 model variant and year of manufacture.
It is always advisable to compare the vehicle's chassis number with the part number to ensure 100% compatibility before attempting a Citroën C3-XR I airbag control unit repair.
- 9651927380 → Manufacturer: Citroën → Type: Original OEM
- 9651927580 → Manufacturer: Citroën → Type: Original OEM
- 96576781XT → Manufacturer: Citroën → Type: Original OEM
- 9656888580 → Manufacturer: Citroën → Type: Original OEM
- 621282500 / 9677251880 → Manufacturer: Unknown (presumably Autoliv/Bosch) → Type: Original OEM