B1B02 means the occupant restraint controller found an open or a high resistance on the driver airbag squib circuit. It is the airbag code we hear about most from people who just had the steering wheel or column apart. The repair lives in the circuit, not in the module's memory.
With the ignition on, the ORC on Chrysler, Dodge, Jeep, and Ram vehicles pushes a small diagnostic current down each squib supply line and reads what comes back. A healthy driver airbag squib returns a low, steady resistance. B1B02 sets when the ORC reads an open circuit, or a resistance high enough that it can no longer count on the bag firing when it is told to.
The factory definition is DRIVER AIRBAG SQUIB 1 CIRCUIT OPEN, and the set condition is an open or high resistance on the driver squib 1 circuits. Put plainly, the module is telling you the path to the driver airbag is broken somewhere between the ORC connector and the bag.
The driver circuit is the one loop in the car that runs through the clockspring behind the steering wheel, so it takes more mechanical abuse than any other. Every turn of the wheel flexes that ribbon. High mileage cars and cars that just had steering wheel, horn, or cruise control work are where B1B02 turns up.
B1B02 is a circuit fault. The ORC measures it live every time the key comes on, so it is not a record of something that happened in the past and it does not lock the module against future use. Repair the break and the code clears itself on the next self test, then the airbag light goes out.
No, and this is one we get asked about often enough to be blunt on. B1B02 is an open circuit. Wiping a module's memory does not reconnect a wire. The connector, the clockspring, or the harness has to be repaired first, and the code goes away on its own once the ORC reads a good squib again.
Before anyone orders parts, unplug and reseat the driver airbag connector and the clockspring connector, because a lock tab that never clicked home is a free fix. When the clockspring is genuinely the problem we stock genuine OEM clocksprings, and driver airbags when the bag itself is the open. Only if that same vehicle is also holding crash data from an accident does our airbag module reset come into it.
This squib wording for B1B02 is specific to the Chrysler group, so it applies to Chrysler, Dodge, Jeep, and Ram vehicles built with an ORC, roughly 2006 through the mid 2010s. It appears in service information for the Jeep Grand Cherokee, Dodge Journey, Dodge Durango, and Chrysler 200. Later FCA platforms report driver airbag circuit problems under the generic B0001 range, and other automakers use B1B numbers for parking sensors and other systems that have nothing to do with restraints, so the make matters when you read this one.
Start at the steering wheel. Disconnect the battery and give the system the two minutes the factory procedure calls for, then pull the driver airbag, check that the squib connector is fully seated with its lock engaged, and look for a bent or backed out terminal. If that end is clean, the clockspring is next. The factory shortcut for an intermittent is to watch the scan tool for active codes while turning the wheel lock to lock. Harness checks come after that, and the manual reaches the ORC last.
B1B01 and B1B03 cover the short to battery and shorted together versions of this same circuit, B0001 is the generic driver frontal equivalent, and our guide on what an SRS airbag module does explains how the module tests these loops in the first place.
Related codes: B1B01, B1B03, B0001
Keep reading:
Code scope: Chrysler, Dodge, Jeep, Ram. The same number can mean something different on another manufacturer, so match the code to your make before you act on it.
A reset clears stored crash data. A replacement part fixes a hardware fault. We have read these codes since the nineties and will tell you which one you are looking at.
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