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post #1 of 5 (permalink) Old 03-29-14, 05:05 AM Thread Starter
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Airbag Code 51 on 2004 GM

The airbag light on my 2004 Gran Marquis is flashing code 51. I have found two different reasons for this code. One is a blown thermal fuse and the other is Driver Safety Belt Buckle Switch Circuit Fault. It is a very intermittent code. Is this an issue I can try to fix myself or should I just take it to a dealer? Thank you.


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post #2 of 5 (permalink) Old 03-29-14, 07:35 AM
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Re: Airbag Code 51 on 2004 GM

r-clar should be able to help you with this when he comes on.

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post #3 of 5 (permalink) Old 03-29-14, 05:17 PM
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Re: Airbag Code 51 on 2004 GM

Has anything been done to the car a short while ago? Sometimes a connection will cause it. Check the connectors on the front crash sensors too.

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post #4 of 5 (permalink) Old 03-29-14, 08:34 PM
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Re: Airbag Code 51 on 2004 GM

Only definition I get for lamp fault code 51 is the drivers buckle circuit open. I would start by doing a good visual inspection of wiring under drivers seat. After that the pinpoint test wants you to try a known good buckle. Then check wiring. Don't see many problems with them so hopefully something happened under seat to the plug


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post #5 of 5 (permalink) Old 03-29-14, 10:14 PM Thread Starter
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Re: Airbag Code 51 on 2004 GM

I have only owned the car since Dec 5th and the airbag light started flashing 3-4 weeks ago. There has been nothing done to the car in the time I have owned it. I have put less then 1,000 miles on the car, but the car does have 82,000 miles. This is a very intermittent code. The car can go for a day or two and show no code or the code can flash 4 to 5 times a day. I will check under the seat when I get a chance. Thank you

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