fault code guide
B0010: Driver Frontal Stage 1 Deployment Control Circuit Malfunction
Fault code B0010 means the car computer has detected an electrical fault in the driver front airbag circuit. The car drives normally, but the steering wheel airbag will not deploy if you have a crash.
How it shows up: The red or amber airbag (SRS) warning light stays lit on your dashboard, and you may find your steering wheel horn or audio buttons stop working. The B0010 code is retrieved by plugging a diagnostic scanner into the car OBD port.
Updated 9 November 2026
Can I keep driving?
Service soon
The car is physically drivable, but your steering wheel airbag is completely disabled and will not protect you during a collision.
What to do right now
- 1Check your instrument cluster to confirm if the airbag warning light is illuminated continuously.
- 2Test whether your horn and steering wheel button controls still work properly while parked.
- 3Drive cautiously to your destination, avoiding motorways if possible, and book an inspection with a qualified garage.
Likely causes
Most likely first.
- Likely
Broken steering column clockspring
The clockspring is a spiralled ribbon cable behind the steering wheel that flexes whenever you steer. Over time, constant turning causes the internal copper ribbons to crack and break the electrical circuit.
- Possible
Loose or oxidised airbag connector
The yellow safety connectors behind the steering wheel airbag module or at the base of the steering column can loosen from road vibration or develop corrosion, creating high electrical resistance.
- Possible
Damaged steering column wiring harness
Wires routed through the adjustable steering column can pinch, chafe or stretch over time as the steering wheel position is moved.
- Rare
Faulty driver airbag inflator module
The internal squib or firing circuit inside the steering wheel airbag module can fail internally, causing an open circuit reading.
What you can check yourself
Park somewhere safe and level, engine off, before you start.
- 1
Test the horn and steering wheel controls
With the car safely parked, sound the horn and press any audio or cruise control buttons on the steering wheel while turning it from lock to lock. If the buttons or horn cut out, the clockspring ribbon is almost certainly broken.
- 2
Check 12-volt battery health
A weak car battery dropping below 12 volts can cause sensitive airbag control modules to flag false circuit faults during engine startup. Measure the battery resting voltage with a multimeter or have a motor factors test it.
- 3
Check for manufacturer safety recalls
Contact a main dealer or check government recall databases online using your vehicle registration number. Several manufacturers have issued safety recalls covering faulty driver airbag inflators and clockspring assemblies.
Rough cost to fix
Rough estimateTypical prices in Ireland (€) and the UK (£), from an independent garage up to a main dealer. The total bill depends heavily on whether your car needs a simple wiring repair or a genuine main dealer clockspring assembly.
Clockspring (squib ring) replacement
- Do it yourself
- Garage job
- At a garage
- €180–420£150–360 in the UK
Airbag wiring harness or connector repair
- Do it yourself
- Garage job
- At a garage
- €110–240£90–200 in the UK
Driver steering wheel airbag module replacement
- Do it yourself
- Garage job
- At a garage
- €350–850£300–750 in the UK
When to go to a garage
- Go to a garage as soon as possible because an inactive driver airbag leaves you unprotected in an impact.
- Book an urgent repair if your annual NCT or MOT inspection is approaching.
- Call a garage immediately if you hear a clicking or scraping noise from inside the steering wheel when turning.
Questions drivers ask
Can I keep driving my car with fault code B0010?
You can physically drive the car because the engine, brakes and steering continue to work normally. However, the supplemental restraint system shuts down the driver frontal airbag when this fault is present. In an accident, the airbag will not deploy to cushion your head and chest.
Will clearing code B0010 turn off the airbag light permanently?
No, simply clearing the code with a diagnostic tool will not fix the problem. The airbag module runs a continuous resistance check on the deployment circuit every time you turn on the ignition. If the broken clockspring or loose wire has not been repaired, the code and light return immediately.
Will my car pass its MOT or NCT with fault code B0010?
No, it will fail both tests automatically. Under MOT rules in the UK and NCT rules in Ireland, an illuminated airbag warning light or an airbag system that indicates a malfunction results in an immediate test failure.
Why should I not test airbag wiring with an ordinary multimeter myself?
Standard multimeters send a small testing voltage through the circuit to measure resistance. That small test current can be enough to trigger the pyrotechnic detonator in the airbag module, causing it to deploy violently in your face. All airbag circuit testing must be left to a qualified professional with dedicated safety tools.
Test rules here are for the National Car Test in Ireland (NCT) and the MOT in the UK. Elsewhere, check the regulations of your own country or state before going for a vehicle test.
The warning light you may see
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General guidance for most cars, not a diagnosis of yours. Details differ by make, model and year - check your handbook, and if in doubt, don't drive.