Question 1

What does the B1000 fault code mean?

Accepted Answer

B1000 indicates an internal fault within the airbag control unit (ACU/SRS ECU). It most commonly appears after a collision where crash data has been written into the module's memory, but can also stem from a power supply issue or internal component failure within the ECU itself.

Question 2

Is it safe to drive with a B1000 airbag fault code?

Accepted Answer

Driving with an active B1000 is a significant safety risk. The airbag system is disabled — meaning neither airbags nor seatbelt pre-tensioners will deploy in a collision. The vehicle will also fail its MOT if the airbag warning light remains illuminated. We strongly recommend booking a diagnosis as soon as possible.

Question 3

How much does fixing a B1000 airbag ECU fault cost in Winchmore Hill?

Accepted Answer

Where the fix is a crash data reset and module re-initialisation, costs are typically in the range of £80–£150 at MnF Motors. If the ECU requires repair or replacement the cost varies by vehicle and module type. We always quote before any work begins — no surprises.

Question 4

Can the B1000 code be fixed without replacing the airbag ECU?

Accepted Answer

Yes, in many cases. If the fault has been triggered by stored crash data, a professional crash data reset using OEM-level tooling can clear the fault permanently without replacing any hardware. MnF Motors always attempts the repair route first, saving customers significant money.

Question 5

Will a B1000 airbag fault cause an MOT failure?

Accepted Answer

Yes. An illuminated airbag warning light is a mandatory MOT failure point. The vehicle cannot pass its MOT until the SRS system has been fully restored and the warning light is extinguished. MnF Motors offers MOT testing on-site, so you can book a test immediately after your repair is completed.