2004 Peugeot 206 airbag light

Could check connections under seat , but this gives you more info re. Comm unit etc.

Airbag warning light has come on in my Peugeot 206?


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Your car is still covered by the 3 years manufacturers standard warranty which means when you take it to your dealer to fix they will do so free of charge.

The airbag system does NOT have sensors which check the system constantly.
The only sensors are the impact sensors which consist of a ball bearing in a tube of high viscosity jelly, under an impact of >80 g the ball is forced through the jelly to complete the circuit and set off the airbags.
The system is controlled by an ecu, and if the system detects any open or short circuits in the wiring it will memorise a fault and illuminate the light to let you know you need to take it to a dealer.

The most likely causes are the connections under the 2 front seats for the seatbelt pretensioner and for the side airbags if they are fitted, simply a case of cutting the connector out and joining the wires with a heatshrink solder type sleeve.
The other possibilites are a faulty comm 2000 unit, this would cause a 'drivers level 1 igniter open circuit or short circuit to earth' fault, though it is less common but not unheard of for these units to develop airbag problems.
The actual airbags never usually cause faults.
There could also be a faulty ecu, or a power supply problem to the ecu.
If your battery has recently been flat then it can cause 'temporary supply voltage' and 'passengers airbag deactivation not defined' faults too.

However, whatever is at fault you will need to take it to your dealer to clear the fault codes even if you fix it yourself, so why bother trying to fix it when they will fix it for you for free?

To anyone reading this.
NEVER attempt any work on your car's airbag system unless you know exactly what you are doing.
The airbag components (airbags, side airbags, seatbelt pretensioners, curtain airbags) are pyrotechnic devices which means they are set off by a small explosive charge.
If you inadvertently set off an airbag component when removing it, or when your head is near it you could kill yourself. A few people die each year in the UK alone working with airbag systems when they shouldn't be.
And don't use a multimeter to test the wires either unless you know what you are doing as checking resistance of an airbag WILL detonate it.
Source(s):
Citroen/Peugeot Senior tech.
2 years ago

I think i would check under bonnet fuse box. Check earth strap on gearbox also

Sorry meant to add getting a read carried out as could be comm fault but dials dont generally zero if it is the comm at fault