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post #1 of 1 (permalink) Old 08-28-2011, 05:13 PM Thread Starter
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Air Bag Codes

Over the past few months I've seen a few air bag code related threads pop up. I wasn't able to find a comprehensive list of code definitions on the site, so I did the research and am posting it here for reference. Original material came from

Code Meaning
12 Low Battery Voltage
13 Air Bag Circuit - Shorted to Ground
14 Primary Crash Sensor - Shorted to Ground
21 Safing Sensor - Not Mounted to Vehicle Properly
22 Safing Sensor Output Circuit - Shorted to Battery Voltage
23 Safing Sensor Input Feed/Return Circuit - Open
24 Safing Sensor Output Feed/Return Circuit - Open
32 Driver-Side Air Bag Circuit - High Resistance or Open
33 Passenger-Side Air Bag Circuit - High Resistance or Open
34 Driver-Side Air Bag Circuit - Low Resistance or Shorted
35 Passenger-Side Air Bag Circuit - Low Resistance or Shorted
41 Primary Crash Sensor #1 Feed/Return Circuit - Open
42 Primary Crash Sensor #2 Feed/Return Circuit - Open
44 Primary Crash Sensor #1 - Not Mounted to Vehicle Properly
45 Primary Crash Sensor #2 - Not Mounted to Vehicle Properly
51 Diagnostic Monitor Internal Thermal Fuse - Open Due to Intermittent Short to Ground
52 Backup Power Supply - Voltage Boost Fault
53 Primary Crash Sensor Circuits - Resistance to Ground, or Internal Diagnostic Monitor Fault

Rapid Continuous Flashing of AIR BAG Readiness Lamp - All Primary Crash Sensors Disconnected

If you plan to work on your airbag system, exercise extreme caution. Personal injury may result if you accidentally deploy an air bag. The airbag system is live all of the time - it is not switched on and off by the key. There are also backup power supplies. The 1992+ systems will discharge in about one minute after disconnecting the battery.

Never attach a self-powered test light to any part of an airbag system. If you want to work on the system, acquire and review a manual that covers servicing of the system. Examples are the Air Bag System Diagnosis training manual from Ford, as well as the shop manuals from Helm.

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