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SRS Warning Light After replacing fuel pump, clears but comes back

367 Views 5 Replies 4 Participants Last post by  hoonk
A while back I had my fuel pump go out on the ’03 Volvo XC70. To get to it I had to pull the back seat and as such didn’t follow the precise order of steps to disconnect the battery terminals before unplugging the side airbag sensor in the back seat. Once everything was back together I had an SRS airbag warning light on the instrument panel, but never the actual airbag light. I didn’t have access to a scanner that could clear that and I wasn’t paying Volvo $150 to do that for me. Fast forward, I recently bought an Autel MK808, I followed the process I have seen several others do on YouTube to clear what appeared to be the same code, and it cleared on my XC70. However, after turning the car off and back on the code comes back.
The code that keeps coming back is 00D4 Permanent Fault SRS-00D4 lamp ; Faulty Signal
I have had my instrument panel worked on for issues in the past, before the fuel pump failure and am having an issue with the trip gage again but I thought that was originally irrelevant, now I am not so sure. Could the code not clearly be because of an issue with my gage cluster?
I am hesitant to do anything to test the actual sensor so I am at a loss. Is it my scan tool not being able to clear it, I am performing the wrong order of operations, is it the sensor, is it my gage cluster.
Any thoughts or ideas are welcome.

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So to be a bit more specific. I had my instrument panel repaired about a year prior to the fuel pump going out. The back lights were dim and couldn't be adjusted and there was no odometer reading, that was why I had it repaired. A year later the fuel pump went out and I had to pull the back seat in order to get to it and that is when I unplugged the side airbag sensor, when I got everything back together I had the SRS warning.

Fast forward to now, I have gone back to check that everything is plugged in correctly and even unplugged and re-plugged everything back in, The plugs are all different sizes and colors so you really can't confuse them. I used the Autel to clear everything and again the codes cleared while in key in position 2 and stayed cleared when started from position 2, but as soon as I turn the card completely off and back on, code returns. The codes that constantly return are the CEM 00D4 Permanent Fault SRS-00D4 lamp ; Faulty Signal and thenDIM-0003 SRS: Circuit Fault and DIM-0006 orange warning lamp: Circuit Fault.

There is a blank female plug, but I am 95% certain is was always blank and when I took the seat out there is no sign of of extra cables or loose plug anywhere
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