Drivers side pillar air bag open circuit Focus mk2 2010

[Skyhigh]

Hi all I have a airbag warning light that’s come on it’s saying that there’s a open circuit on the drivers side pillar b2274 a-b or a-c the garage has tried the connector in the pillar just above the dash and cleared the code that lasted a few days now it’s on and off they think it may be a faulty connector but aren’t sure, any ideas? Thanks