B2207-00 is the Occupant Restraint Controller reporting an internal fault in itself. Chrysler built systems number these internal faults, and this one is the first of them, pointing at the module rather than anything wired to it.
The restraint controller runs a series of checks on its own circuitry every time it powers up. Firing circuit drivers, memory, supply regulation, and the crash algorithm hardware all get tested before the module allows the system to arm. When one of those internal checks fails, the module records an internal fault code and disables deployment.
Internal fault codes name the module itself as the problem. There is no connector to reseat and no harness to repair, which is what separates them from the circuit codes that dominate the rest of the list. The published meaning identifies this as internal fault 1 without spelling out which specific self test failed.
This sits on the hardware side rather than the crash data side. The module is describing a fault inside itself right now, and it repeats that report on every key cycle regardless of how many times the code is cleared. Crash data is the latched entry made when airbags fire, which a scan tool cannot erase and a reset can.
Our mail-in reset clears stored deployment data. Whether it helps with an internal fault depends on whether the module is reporting a live hardware failure or carrying a stored condition from a past event. Send us the module and we will tell you what it holds and whether it can be brought back. Call 501-988-0611 first if you want to talk it through before shipping.
Among the makes we carry, B2207-00 belongs to Ram. It sits next to B2208 in the same family, and the two codes separate one internal self test result from another while pointing at the same controller.
Check module power, grounds, and battery voltage before condemning the controller, since a weak supply can make a healthy module report faults about itself. Look for water at the module mounting location and at the cowl above it. Verify the code stays after a clean battery and a solid ground. If the module still reports an internal fault, mail it to us and we will evaluate it, or we can supply a genuine OEM replacement matched to your VIN. Related codes: B2205-00, B2208-00, B1100.
Mail us your original module. We restore it to factory-ready condition for a fraction of dealer cost, the same way we have since 1997.
Genuine OEM, tested, and shipped ground from Jacksonville, Arkansas.
Do not see it listed? Request a part or call 501-988-0611.