What is a Dacia Logan Preference II airbag control unit?
The airbag control unit for the Dacia Logan Preference II is the vehicle's central safety unit, detecting accident events in real time and coordinating the immediate deployment of the airbags and seatbelt pretensioners. It continuously monitors all relevant sensors and ensures the functionality of the entire occupant restraint system to maximize safety.
This electronic control unit, also known as the airbag ECU, is a critical component for passive safety. It processes signals from crash sensors to react to a collision within milliseconds.
The unit also stores important crash data and error codes relevant for post-incident diagnostics. Proper function is essential for the protection of vehicle occupants.
Why is the Dacia Logan Preference II airbag control unit defective?
Because electronic components age, overvoltages occur, or accident events store crash data, the airbag control unit in the Dacia Logan Preference II can become defective, which is often noticeable by an illuminated airbag warning light in the dashboard and impairs vehicle safety.
A common cause of a defect is internal memory damage caused by age-related wear and tear on the electronics. Voltage spikes or moisture can also cause the control unit to malfunction.
After an accident, crash data is often irreversibly stored in the device, which makes a professional Dacia Logan Preference II airbag control unit repair or replacement necessary.
Common error codes for Dacia Logan Preference II airbag control unit repair
If a Dacia Logan Preference II airbag control unit repair is necessary, specific B-codes indicate internal problems with the airbag ECU, typically involving memory errors, communication problems, or irregular voltage supplies, requiring precise diagnosis.
- B1000: Control unit communication error → Meaning: Internal communication fault of the control unit → Cause: Problem in the data bus of the airbag ECU.
- B1001: Internal memory error → Meaning: Error in the internal memory of the airbag control unit → Cause: Damage or corruption of the EEPROM/Flash memory.
- B1002: Internal pressure sensor error (ECU) → Meaning: Defect in the pressure sensor integrated in the control unit → Cause: Sensor for impact detection within the control unit faulty.
- B1010: Control unit self-test error → Meaning: Airbag control unit failed internal self-test → Cause: General malfunction of the ECU software or hardware.
- B1100: ECU power supply irregular → Meaning: Problems with the electrical power supply to the control unit → Cause: Unstable or incorrect voltage at the airbag ECU connector.
- B1110: Internal Flash Memory Error → Meaning: Defect in the flash memory in the airbag control unit → Cause: Data corruption or physical defect in the permanent memory.
- B1120: Watchdog Timeout → Meaning: The control unit's monitoring mechanism has not responded → Cause: Software or hardware failure within the airbag ECU.
- B1200: EEPROM error within control unit → Meaning: Error in the EEPROM (electrically erasable programmable read-only memory) → Cause: Corruption or damage to the configuration data.
- B1210: Communication bus (CAN) error → Meaning: Problems with communication via the CAN bus → Cause: Malfunction in the connection between the control unit and the vehicle network.
What part numbers are available for the Dacia Logan Preference II airbag control unit repair?
For Dacia Logan Preference II airbag control unit repairs, only specific OEM part numbers from Continental are relevant, ensuring full compatibility and the highest safety standards. These numbers guarantee that the control unit is the exact one and not other airbag system components.
The most frequently cited and 100% verified OEM part number is **8200 70 23 22** from Continental. This is used as the primary reference for the airbag control unit in the Dacia Logan Preference II and corresponds exactly to the series.
Another approved and compatible OEM part number is **8201 163 278**, also from Continental Temic, a leading supplier of airbag control units. This is a tested alternative and works with Logan models.
Additionally, Continental part number **985100475R** is a certified airbag control unit installed in the Dacia Logan II and other Dacia models. These numbers are crucial for correct identification and safe Dacia Logan Preference II airbag control unit repair.