What is a Peugeot 405 I airbag control unit?
The Peugeot 405 I airbag control unit is the central safety unit in your vehicle, which activates all occupant restraint systems, such as airbags and seatbelt pretensioners, as needed in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all airbag modules.
This electronic control unit is an integral part of the passive safety system and crucial for protecting vehicle occupants. It processes signals from acceleration and impact sensors.
The precise evaluation of this data enables the control unit to trigger the necessary restraint systems within milliseconds in the event of a crash.
Why is the Peugeot 405 I airbag control unit defective?
The Peugeot 405 I airbag control unit is often defective due to internal electronic errors, aging processes, or improper handling, which can lead to malfunctions of the entire airbag system. Because it is a complex electronic component, overvoltage, short circuits, or damaged internal memory can cause failures that require a Peugeot 405 I airbag control unit repair.
Common causes include internal memory errors (EEPROM) caused by power fluctuations or software corruption. A failed internal self-test also indicates a defect in the control unit itself.
A faulty airbag warning light on the dashboard is often the first sign of a failure or malfunction of the airbag control unit, which then requires immediate diagnosis.
Common error codes for Peugeot 405 I airbag control unit repair
During a Peugeot 405 I airbag control unit repair, certain B-codes indicate internal defects within the control unit rather than faulty sensors or airbag modules. Although manufacturer-specific codes for this model are rarely publicly available, general B-codes provide clear indications of necessary repairs to the control unit itself.
- B1000 → Control unit communication error → Faulty internal connections or external communication problems.
- B1001 → Internal memory/memory access error → Damaged EEPROM or flash memory in the control unit.
- B1002 → Internal self-test failed → Hardware defect or software corruption within the ECU.
- B1003 → Voltage fluctuations in the control unit → Unstable vehicle electrical system voltage or defects in the internal voltage regulation of the control unit.
- B1130 → Airbag control unit error (general) → Comprehensive internal functional failure of the control unit.
- B1170 → Error in the control unit EEPROM → Damage to the non-volatile memory in the airbag control unit.
What part numbers are available for the Peugeot 405 I airbag control unit repair?
For the Peugeot 405 I airbag control unit repair, the OEM part number 550 57 81 00 from Autoliv has been identified as the most likely fit, although exact, 100% verified numbers for this specific model are difficult to find online. Since airbag control units are often similar across different Peugeot models, this Autoliv number is an important reference.
Other OEM part numbers for the Peugeot 405 I airbag control unit are not clearly documented in publicly available sources. Therefore, consulting professional parts catalogs is essential to confirm the correct part number for your vehicle.
Workshops offering Peugeot 405 I airbag control unit repairs can determine the exact part number using special databases or by querying the vehicle's vehicle identification number (VIN). This is crucial to ensuring the correct replacement or repair service and avoiding breakdowns.