Airbag warning light on intermittently

John Avis by | March 25, 2019 | My 1998 318is

My warning light came on for a moment, then stayed on, then was off the following day but came on again momentarily.
As per usual, I fix one problem and another appears.

This time the airbag warning light came on for a moment, then stayed on, then was off the following day but came on again momentarily.

I read the codes and I got two errors:
1) Ignition circuit 2 - passenger tensioner: remain over limiting value
2) Fault lamp: open circuit or short circuit to ground

Time to investigate the common causes of these errors.

I did some online research and found some ways to bypass the passenger tensioner by fitting a resistor.

I also found a few posts where people had found that this error was caused by a bad connection.

I like those kind of fixes (ie. free) so crossed my fingers and looked under the seat.

All of the connections seemed to be okay but I pulled them apart and pushed them back together again and cleared the fault codes.

A month later and I have not had the light come on again, so if you have this error it's worth checking the connectors under the passenger seat.

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About me

I am a bit of a 3 series fanatic, having owned a couple of E30s and a few E36s, plus a few parts cars. I like the combination of the compact size, good performance and handling, and that they are more sports sedan than an impractical and extrovert sports car. This blog is a place to share my experience and knowledge.

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