What is an Opel Calibra A airbag control unit?
The Opel Calibra A airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper deployment of airbags and seatbelt pretensioners to maximize occupant safety.
This safety-relevant electronic module, designed specifically for the Opel Calibra A (C89), is crucial for your vehicle's passive safety system. It processes signals from various crash and belt force sensors to initiate the necessary protective measures if necessary.
Why is the Opel Calibra A airbag control unit defective?
The Opel Calibra A airbag control unit is often defective because it is sensitive to electrical problems or internal component failures that impair its continuous diagnostic function. For example, if the power supply is unstable or water ingress causes corrosion, this can lead to malfunctions and the need for repair.
Common causes of defects include aging, vibration, exposure to moisture, or overvoltages in the vehicle electrical system. These factors can damage internal circuits or disrupt the control unit's communication capabilities.
Crash data stored after an accident can also block the control unit, necessitating repair or erasing the crash memory. In such cases, the airbag warning light will illuminate continuously, indicating a failure.
Common error codes for Opel Calibra A airbag control unit repair
During Opel Calibra A airbag control unit repairs, specific error codes occur that directly indicate malfunctions in the module. These codes help to precisely diagnose the problem and identify the necessary steps for restoring the systems, as they usually indicate internal defects or communication issues.
- B1000 → Control unit malfunction / communication error to the airbag control unit → This most frequently documented error indicates an internal malfunction or communication problems.
- B0051 → Control unit error (generic, repair required) → This code is given when a defect indication in the control unit indicates an immediate repair requirement for the control unit.
- B0014 → Driver Side Airbag Squib Circuit - Resistance Too Low → This code concerns the driver airbag squib circuit as a control unit-specific fault, not the sensor or seat belt pretensioner.
What part numbers are available for the Opel Calibra A airbag control unit repair?
For Opel Calibra A airbag control unit repairs, there are several verified OEM part numbers that ensure exact compatibility. These numbers are crucial for finding the right replacement part and ensuring proper airbag system function, as they reflect the specifications for your model.
- 90462305 – GM / Siemens – Original OEM, often identical to Siemens 5WK4071.
- 5WK4071 – Siemens – Supplier OEM, corresponds to GM part number 90462305.
- 90486933 – GM – A confirmed alternative OEM number to 90462305 for the Opel Calibra A.
- 90491004KJ – GM / Bosch – Genuine Bosch control unit, commonly used for Opel airbag systems.
- 90511403 – GM – Another genuine GM part number from official Opel parts catalogs.