SRS-0001 - Internal functional fault in the control unit airbag control unit fault

What does error code SRS-0001 mean in the airbag control unit?

Error code SRS-0001 reports, on Volvo vehicles, an internal functional fault in the airbag control unit itself, meaning a fault in its own electronics rather than in the wiring. The control unit stores this fault in the fault memory and switches on the airbag warning light, so the fault in the restraint system is displayed.

Such an internal fault is detected by the control unit itself and logged in the fault memory. The entry remains stored there for as long as the fault is present.

How do you recognise error code SRS-0001?

You can recognise error code SRS-0001 by the airbag warning light staying on permanently, as the code is stored in the fault memory and cannot be permanently cleared. It is read out with a diagnostic tool, which shows the entry in the airbag control unit's fault memory and so makes the internal fault visible.

The airbag warning light stays on permanently for as long as the entry is in the fault memory. Clearing the code without a repair does not make it permanently disappear.

A specialist workshop usually reads out the fault memory as a first step, before any further checks begin.

What causes error code SRS-0001?

Error code SRS-0001 arises when an internal fault occurs in the airbag control unit itself, for example as a result of crash data after an accident or of ageing electronic components and soldered joints. Which cause applies in an individual case cannot be identified from the code alone and requires a detailed check at a specialist workshop.

• Crash data stored in the control unit after an accident
• Ageing electronic components in the airbag control unit
• Soldered joints that have come loose or are faulty
• Moisture or corrosion on the electronics
• Voltage spikes from a weak battery or jump-starting

Which of these causes applies is only established by checking the control unit at a specialist workshop.

In which vehicles does error code SRS-0001 occur?

Error code SRS-0001 is known for the Volvo brand, among others on the models Volvo S40 M and Volvo S90 964. On other vehicles the meaning of the code may differ, and the list of models does not claim to be complete.

All the models named are Volvo vehicles. Whether error code SRS-0001 occurs on a specific vehicle can only be established by reading out the fault memory with a diagnostic tool.

How is error code SRS-0001 resolved?

Error code SRS-0001 is resolved by first reading out the fault memory with a diagnostic tool and then sending the airbag control unit in for repair. With an internal fault the cause lies in the control unit itself, so the route is repair of the control unit, which Airbag24 carries out.

Have the fault memory read out with a diagnostic tool first, before any further steps are carried out on the control unit. Work on the airbag system should be carried out by qualified specialists.

If the fault lies in the control unit, you first disconnect the battery and only then remove the control unit. You then create a repair order online and send the unit in to Airbag24. Inspection, repair 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.