01227 - Crash data stored, side airbag on passenger's side airbag control unit fault

What does error code 01227 mean in the airbag control unit?

Error code 01227 reports that crash data of the side airbag on the passenger side of the vehicle is stored and that the restraint system is therefore affected. The airbag control unit stores this fault in the fault memory and switches on the airbag warning light, so that the finding then becomes visible on the vehicle.

Crash data are measured values stored in the airbag control unit that are recorded during an impact. The error code therefore indicates that such an entry exists for the passenger side.

The designation varies: sometimes it reads 'crash data stored, passenger side', sometimes 'crash data side airbag passenger side stored'. Both refer to the same message.

How do you recognise error code 01227?

You recognise error code 01227 by a continuously lit airbag warning light, when the code is listed in the fault memory and cannot be erased permanently. The code is read out with a diagnostic tool that retrieves the fault memory of the airbag control unit and displays the stored entry.

The entry remains in the fault memory until it is deliberately removed. Which entry is actually stored is shown only by the readout, not by the warning light alone.

What causes error code 01227?

For error code 01227, the first possible cause is crash data from an accident that are stored in the airbag control unit. In addition, internal faults in the airbag control unit come into consideration, which can arise from aged electronic components, solder joints, moisture or corrosion, as well as voltage spikes, for example from a weak battery or a jump start.

• Crash data from an accident that remain in the airbag control unit
• Aged electronic components in the airbag control unit
• Faulty solder joints in the control unit
• Moisture or corrosion on the components of the control unit
• Voltage spikes from a weak battery or a jump start

Whether any of these causes applies is only established by checking the control unit. The code alone does not name a cause.

In which vehicles does error code 01227 occur?

Error code 01227 occurs on Cupra vehicles, specifically on several models such as Ateca, Formentor, Leon and Born. The code therefore does not affect just one vehicle, but several model series of this brand and their models in which it is known.

The list is not complete and shows only a selection of Cupra models. On other vehicles the meaning may differ.

How is error code 01227 resolved?

Error code 01227 is resolved by first having the fault memory read out with a diagnostic tool and then sending the airbag control unit in for repair. If the cause lies in the control unit, as with stored crash data, the unit itself is the focus of the repair at Airbag24.

First disconnect the battery and then remove the airbag control unit. Afterwards, create a repair order online and send the unit to Airbag24.

Checking, repairing and testing usually take 3–4 working days.

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. Work on the airbag system belongs in the hands of qualified professionals.