B1000 fault code: what it means

B1000: Centre airbag sensor assembly (airbag ECU) malfunction on a Lexus. Airbags may not deploy; also stored after a deployment.

Body · Safety risk

Usual causes, most likely first

airbag ECU internal fault
airbag ECU holding crash data
water damage under the console

B1000 by make

Lexus

Centre airbag sensor assembly (airbag ECU) malfunction on a Lexus. Airbags may not deploy; also stored after a deployment.

Usual causes: airbag ECU internal fault; airbag ECU holding crash data; water damage under the console

Nissan

Airbag diagnosis sensor unit internal fault. Airbag light on; airbags and pretensioners may not work.

Usual causes: airbag control unit faulty; unit has crash data stored after a deployment

Toyota

Centre airbag sensor assembly (airbag ECU) malfunction. Airbags may not deploy. Also stored after a crash with deployment.

Usual causes: airbag ECU internal fault; airbag ECU holding crash data after deployment; water damage under the console

What the repair usually costs

Water damage dry-out (carpet lift, dry, sanitise)NZ$460–NZ$1,390 · A$500–A$1,480

Not sure what B1000 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.