Airbag control unit with part number P68233021AB

What does the airbag control unit P68233021AB do?

The airbag control unit P68233021AB is the central control unit of the restraint system (SRS) of Fiat. It evaluates the crash sensors and decides in an emergency which airbags and seatbelt pretensioners are triggered.

The decision is made in fractions of a second. During normal operation, the unit monitors the system without pause and reports faults via the airbag warning light.

After an accident, it stores crash data and locks itself. At Airbag24, the repair lifts this lock again.

Why does the control unit P68233021AB fail?

The most common cause is crash data stored after an accident, even if no airbag has triggered. A normal diagnostic tool does not remove it.

Other causes are also possible: aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

How can you tell that the P68233021AB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition, an error message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit.

The airbag warning light is the first warning sign you will notice. If it stays on after a restart, this may indicate a persistent fault.

A fault memory that cannot be cleared confirms the suspicion. In an emergency, airbags and seatbelt pretensioners may then not be able to trigger.

Which vehicles is the P68233021AB fitted in?

The part number assigns the control unit to specific vehicles. The control unit P68233021AB is fitted in these vehicles: Fiat 500 312 (2007-2024).

The following list shows the vehicles recorded for this part number:

• Fiat 500 312 (2007-2024)

Have the fault memory read out first. Then compare the part number on the label of the removed unit with your details, so that a plug or a cable is safely ruled out as the cause.

For the same vehicles, we also repair control units with the part numbers 51782985, 51870005, 51897810, 51918659, 51963734, 519637734.

How does the repair of the P68233021AB work?

At Airbag24, inspection, repair and testing generally take 3–4 working days. Beforehand, you read out the fault memory and remove the control unit.

Enclose the log with the unit and disconnect the battery. Then remove the control unit, create your repair order online and pack the unit well.

Airbag24 inspects the unit, replaces defective components, deletes stored crash data and carries out a function test. Afterwards your own unit comes back to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit P68233021AB get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Place the printed repair order in the parcel and pack the control unit shock-proof.