Airbag control unit with part number 1376420080

What is the function of Airbag Control Unit 1376420080?

The airbag control unit with part number 1376420080 is the central control module for the passive safety system, primarily in the Fiat Fiorino 225. It processes data from crash sensors and determines whether to deploy the airbags and seatbelt pretensioners. A malfunction in this component results in complete deactivation of the airbag system, compromising occupant safety.

As the “brain” of the restraint system, this control unit continuously monitors all connected components—from the impact sensors at the front and sides of the vehicle to the airbag igniters and seatbelt pretensioners—ensuring that the system responds within milliseconds in an emergency.

In normal operation, the control unit performs a self-test each time the vehicle is started. If the test passes, the SRS warning light in the cockpit goes off. If an internal fault is detected, the light remains on to alert the driver that airbag protection is no longer available.

Why does control unit 1376420080 fail?

The most common causes of failure for control unit 1376420080 are stored crash data following an accident, which locks the unit, as well as internal electronic faults. These can be triggered by moisture, component aging, or voltage surges and often manifest as error code B0100.

After a collision, the control unit stores so‑called crash data—a safety feature designed to prevent further use of the vehicle without verifying the safety system. This data cannot be erased using standard diagnostic tools and permanently disables the control unit’s functionality, even if the external damage has already been repaired.

Internal hardware defects are another frequent cause. Aging of electronic components such as processors or memory chips can lead to malfunctions. Similarly, moisture ingress may cause corrosion on the circuit board, while voltage spikes—for example, during a jump-start—can irreparably damage sensitive components.

It is crucial to verify the exact part number, as variants like 1376423080 may exist. A defect typically presents with specific error codes indicating an unresolvable internal fault.

How do you recognize a fault in control unit 1376420080?

A defective control unit 1376420080 is primarily indicated by a constantly illuminated or flashing SRS airbag warning light in the instrument cluster. Additionally, communication issues with diagnostic equipment frequently occur, or persistent, non‑erasable error codes such as B0100 (internal electronic fault) or 65535 (control unit defective) are logged.

The clearest sign is the active SRS warning light, which may remain steadily lit, flash, or illuminate only after a brief delay following ignition (e.g., 30 seconds). This indicates that the airbag system is not operational.

During workshop diagnostics, the problem often becomes apparent when communication with the airbag control unit cannot be established. Alternatively, error codes such as B0100, B0101, 65535, 93F9, or general CAN bus errors are read—errors that persist even after replacing other components like the coil spring.

Especially after an accident, the functional lock caused by stored crash data is a clear symptom. Although all external airbag system components may appear intact, the internal entry in the control unit prevents its reactivation.

In which models is control unit 1376420080 installed?

The airbag control unit with part number 1376420080 is mainly used in vehicles manufactured by the Fiat Group, particularly in the Fiat Fiorino model series 225. It is also found in identical or platform‑related models from Peugeot and Citroën developed through collaborative partnerships.

At Airbag24, repair services for control unit 1376420080 are offered for the following specific models:

Fiat Fiorino 225 (model years 2008–2016)

Fiat Fiorino 225 Facelift (model years 2016–2024)

How is control unit 1376420080 repaired?

Professional repairs at Airbag24 follow a systematic process. Upon receipt, the control unit undergoes a thorough analysis to precisely identify the root cause—whether it’s crash data or an electronic fault. Subsequently, crash data is reset, defective components on the circuit board are replaced, and a final functional test confirms full operability.

First, the faulty control unit is removed from the vehicle and securely packaged for shipment to Airbag24. Be sure to include a completed repair form with the package to ensure smooth processing.

Upon receipt of the unit, our technicians perform a chip-level diagnosis. This involves inspecting the circuit board for damage caused by moisture or overvoltage and reading out the internal memory to identify crash data or software errors.

The actual repair process includes reprogramming the memory to erase crash data and replacing any defective electronic components such as resistors, capacitors, or processors. After completion, the control unit is tested on a test bench to verify proper functionality. We provide 2 years' statutory liability for defects on every repair.

Is repairing control unit 1376420080 worthwhile?

Yes, repair is an economically and technically sensible alternative to costly new purchase. It offers savings of up to 85% compared to a new part, fully restores safety and functionality, and avoids compatibility issues. Additionally, repairs are backed by 2 years’ statutory liability for defects.

The biggest advantage is the significant cost reduction. A new control unit is often disproportionately expensive, whereas repair costs only a fraction of that while restoring 100% of the original functionality.

Since the original vehicle‑specific control unit remains intact, there is no need for programming or adaptation procedures—commonly required when installing a new unit at a specialized workshop. The repaired unit can be reinstalled using a plug-and-play approach.