Airbag control unit with part number 14 014 078 80

What is the function of Airbag Control Unit 14 014 078 80?

The airbag control unit with part number 14 014 078 80 is an original Bosch‑manufactured control module. It is responsible for monitoring and controlling the entire occupant protection system in vehicles such as the Citroën Jumpy I and Peugeot Expert II, and it communicates with the vehicle’s electronic systems via the CAN bus.

This specialized module serves as the central component of the passive safety system. It continuously receives and processes data from various acceleration and angular velocity sensors throughout the vehicle.

In the event of a collision, the control unit determines within milliseconds whether and which restraint systems—such as airbags and seatbelt pretensioners—should be deployed. As an integral part of the CAN bus network, it maintains constant communication with other control units to ensure precise and reliable operation.

Why does control unit 14 014 078 80 fail?

The most common reason for requiring repair of control unit 14 014 078 80 is the storage of crash data following an accident. This data permanently locks the module’s functionality. General electronic faults in internal components can also lead to failure.

After airbags or seatbelt pretensioners are deployed, the control unit irrevocably writes so‑called crash data into its internal memory. This lockout mechanism ensures safety but cannot be reset using conventional workshop diagnostic tools, necessitating repair.

Besides this internal lockout, hardware defects—such as cold solder joints or the failure of individual electronic components on the circuit board—can also impair functionality. An alternative Bosch part number for comparable applications is 0 285 010 556.

How do you recognize a fault in 14 014 078 80?

A fault in control unit 14 014 078 80 primarily manifests as a constantly illuminated airbag warning light on the instrument cluster. When reading the fault memory, error codes often appear indicating either an internal control unit malfunction or stored crash data.

The most noticeable sign of a problem is the red airbag warning light that fails to turn off after the engine starts. This alerts the driver that the entire restraint system is inoperative.

During diagnostics at the workshop, error codes such as “control unit defective,” “internal fault,” or “crash event stored” may be retrieved. In some cases, communication between the diagnostic tool and the airbag control unit breaks down entirely, further suggesting a severe internal defect.

In which vehicles is 14 014 078 80 installed?

The Bosch airbag control unit 14 014 078 80 is specifically used in certain models from Citroën and Peugeot. Its main applications include the first‑generation Citroën Jumpy and the second‑generation Peugeot Expert, with compatibility ensured by the part number.

At Airbag24, repairs for this control unit are offered for the following specific vehicle models. Precise matching is essential for the proper functioning of the safety system.

Citroën: Jumpy I (model years 1995–2004) and its facelifted variant (model years 2004–2006)

Peugeot: Expert II

How does repair work at Airbag24?

After removal and straightforward shipment of the control unit to Airbag24, technicians perform a thorough analysis. Repairs include safely resetting crash data or repairing faulty hardware. The unit is then tested and returned with 2 years' statutory liability for defects.

The repair process at Airbag24 is transparent for both workshops and private customers. Upon receipt of the removed control unit, it undergoes an initial inspection to pinpoint the exact fault.

Depending on the issue, crash data is professionally erased, or defective electronic components on the circuit board are replaced. Final functional tests confirm that the control unit is fully operational again, and each repair comes with 2 years’ statutory liability for defects.