What is a Peugeot 107 I airbag control unit?
The Peugeot 107 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 of utmost importance for safety.
This module, also known as the airbag ECU, controls the deployment of the driver and front passenger airbags, as well as the seat belt pretensioners, in the event of a collision. It is an essential component of the vehicle's passive safety system.
The correct functioning of the airbag control unit is crucial to ensuring the safety of vehicle occupants. A malfunction immediately causes the airbag warning light on the dashboard to illuminate.
Why is the Peugeot 107 I airbag control unit defective?
A Peugeot 107 I airbag control unit often fails due to internal electronic damage caused by overvoltage or aging, or because irreversible crash data was stored after an accident. This then leads to communication errors or a total system failure, causing the airbag warning light to remain permanently illuminated.
Common causes are internal errors in the control unit's electronics, which are not directly attributable to external influences. These defects can be the result of material fatigue or production weaknesses.
After an accident, so-called crash data is stored in the control unit. This data prevents the device from being used again until it is professionally erased, which often requires a specialized repair.
Common error codes for Peugeot 107 I airbag control unit repair
When diagnosing a faulty Peugeot 107 I airbag control unit, two primary error codes appear: B1000, which indicates communication problems or an internal control unit defect, and 65535, which signals serious internal damage or total failure of the unit. These codes require professional Peugeot 107 I airbag control unit repair.
- B1000 → Communication error / Internal control unit defect → Airbag ECU
- 65535 → Internal control unit damage / total failure → Airbag ECU
These error codes are specific to the airbag control unit itself and do not indicate problems with sensors, seatbelt pretensioners, or seat occupancy systems. A detailed inspection of the control unit is essential in these cases.
Deleting crash data is also a critical step after an accident, as this data can lock up the system and cause error codes, even if the control unit is otherwise functional.
What part numbers are available for the Peugeot 107 I airbag control unit repair?
For Peugeot 107 I airbag control unit repairs, several verified OEM part numbers exist to ensure the compatibility of the replacement or repair part. These numbers are crucial, as only a precisely fitting control unit ensures full safety functionality and communicates correctly with the vehicle's system.
- 891700H010 (Peugeot OEM)
- 2123BB106 (Peugeot OEM)
- 89170-0H040 (TRW OEM supplier)
- 212388104 (Peugeot OEM)
- 6546F7 (Peugeot OEM)
- 212388110 (Peugeot OEM)
- 891700H050 (Peugeot OEM)
- 6546F6 (Peugeot OEM)
These part numbers have been validated based on independent sources and are specifically confirmed for the airbag control unit of the Peugeot 107 I. Compatibility also extends to similar models such as the Citroën C1 and Toyota Aygo, which use the same control unit architecture.
It is extremely important to ensure the exact part number is used during replacement or repair. An incorrect part number can lead to malfunctions and safety risks, as the programming is vehicle-specific.
When should you consider a Peugeot 107 I airbag control unit repair?
A Peugeot 107 I airbag control unit repair is urgently recommended if the airbag warning light on the dashboard is permanently illuminated or diagnostic devices display error codes B1000 or 65535. Even after an accident, if crash data has been stored, a professional repair or replacement of the control unit is essential to restoring vehicle safety.
Ignoring an illuminated airbag warning light may mean that the airbag system will not function properly in the event of an accident. This poses a significant safety risk and may invalidate your vehicle's operating license.
Repairing an airbag control unit is often a more cost-effective alternative to purchasing a new one. With a professional repair, all vehicle-specific data is retained, making integration into the existing system easier and eliminating the need for recoding.
Peugeot 107 I airbag control unit repair process
The process of repairing a Peugeot 107 I airbag control unit begins with a thorough diagnosis to identify the exact defect, followed by the professional erasure of stored crash data. This is followed by troubleshooting the internal electronics and final functional tests to restore the airbag system to full operational readiness and safety.
First, the defective control unit is removed from the vehicle, making sure to disconnect the vehicle battery to prevent accidental airbag deployment. It is usually located under the center console.
Specialized workshops have the necessary tools and software to troubleshoot the control unit's internal errors and correctly process all relevant data. After the repair, the control unit undergoes comprehensive functional tests to ensure its reliability.