Damaged, loose or corroded connector at the passenger airbag or under the passenger seat or dashboard; Wiring fault in the stage 2 squib circuit (open circuit, short to earth, short to voltage or chafed harness); Faulty passenger airbag module or inflator with out-of-range resistance; Damaged clockspring-type or inline connector, or poor terminal tension in the airbag circuit; Previous collision, repair or airbag component replacement with a mismatched or incorrectly fitted part; Faulty restraint control module.

B0011

Passenger Frontal Stage 2 Deployment Control.

Generic
Body
Generic code
High severity

How this code is built

B: SystemBody
0: Defined bySAE, the same on every car
0: AreaBody area 0
11: FaultThe specific fault in that area

What it means

B0011 is a generic body code relating to the passenger frontal stage 2 deployment control, which is the second-stage airbag inflator circuit for the front passenger airbag. The restraint control module (SRS module) runs self-tests on the squib circuit and sets this code when it sees a fault such as an open circuit, short circuit or resistance outside the expected range. Exact wording and the fault condition can vary by manufacturer and model.

Symptoms

Airbag or SRS warning light on the dashboard
Passenger airbag may not deploy, or may not deploy correctly, in a crash
Passenger airbag status light may behave oddly or show a fault
Failed MOT or inspection due to the SRS warning light
Other SRS codes stored alongside it

Possible causes

Damaged, loose or corroded connector at the passenger airbag or under the passenger seat or dashboardlikely
Wiring fault in the stage 2 squib circuit (open circuit, short to earth, short to voltage or chafed harness)likely
Faulty passenger airbag module or inflator with out-of-range resistancepossible
Damaged clockspring-type or inline connector, or poor terminal tension in the airbag circuitpossible
Previous collision, repair or airbag component replacement with a mismatched or incorrectly fitted partpossible
Faulty restraint control modulerare

How to diagnose

Read all stored SRS codes and freeze frame or status data, and note whether the fault is current or history
Check for recent work, accident damage or water ingress around the dashboard, passenger footwell and seats
Follow the manufacturer's safe procedure first: disconnect the battery and wait the specified time before touching any airbag connector
Visually inspect the passenger airbag connectors and harness for damage, corrosion, bent pins and poor locking, including any yellow SRS connectors
Check terminal fit and look for chafed or pinched wiring along the harness route
With the system safely isolated, measure circuit resistance and check for shorts using the manufacturer's specified values and method; never use a standard test light or an ordinary meter on the squib itself
Confirm the airbag part number and fitment is correct for the vehicle if it has been replaced
Clear the code after repair and recheck that it does not return, then confirm the warning light goes out

How to fix

Repair or replace damaged wiring, following the manufacturer's repair guidance for SRS harnesses
Clean, refit or replace faulty connectors and terminals
Replace the passenger airbag module if its resistance or diagnostics are out of specification
Correct any incorrect or mismatched component fitment
Replace or reprogram the restraint control module only after the wiring and airbag have been proven good, as specified by the manufacturer

Can I keep driving?

High severity

The passenger airbag may not work properly in a crash, so this is a safety issue. The car can be driven short distances if needed, but have it inspected promptly, and avoid carrying a front passenger until it is fixed.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.