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Air Bag Code 51

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Old 06-02-2010, 09:20 AM
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Air Bag Code 51


I have a 1994 Ford Aerostar 2WD 4.0L with 120k miles on it. I had the airbag light start flashing approximately 2 months ago, with a code 51. After researching some this indicates the thermal fuse in the airbag module was blown and there is possibly an intermittent short or the clock spring is bad. I changed out the clock spring module because this seemed to be the most likely candidate, and put a working air bag module in it.

Fast forward a couple of months, and the air bag light is back on, flashing code 51 again. The cruise control and horn still work fine, so the clockspring is not likely bad. I have not been able to find anything really specific for code 51 as to where to look for possible shorts in the wiring harness. I did some searching this past weekend on the car where wiring passes through the body and did not see any bare wires. Can anyone provide any further insight into how to troubleshoot code 51 on an Aerostar?

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