B1347 on a Hyundai or Kia means the SRSCM measured resistance in the first stage driver airbag circuit that is too low. The two squib wires are finding each other somewhere they should not. It is the mirror image of B1346 and it points to a different set of causes.
The SRSCM sends a small test current through the driver airbag squib circuit and reads the resistance that comes back. The 2007 Sonata manual gives a window of 1.9 to 3.0 ohms for that measurement, and other models use their own figures. When the reading falls under the bottom of the window, the module sets B1347.
Low resistance means part of the circuit is being bypassed. Two conductors touching inside a worn clock spring, a terminal pushed out of a connector and contacting its neighbor, or a chafed wire lying against another wire will all pull the measurement down.
There is one more possibility that catches people out. SRS connectors have built in shorting bars that deliberately short the squib terminals together whenever the connector is unplugged, so the airbag cannot fire during service. If a shorting bar hangs up and stays engaged after the connector is mated, the module reads a dead short and sets B1347 while the airbag and the wiring are perfectly fine.
Circuit. B1347 is a live measurement, so the module sets it again at the next key-on until the short is found. No crash data is involved. Before condemning parts it is worth unplugging and re-seating the connectors carefully and looking hard at the shorting bars, because that costs nothing and it resolves a fair share of these.
No. A reset clears stored memory, and B1347 is not stored history. It is the module measuring the circuit right now. Find the short and the code clears normally with a scan tool. If the fault traces into the steering column, a clock spring is usually the part, and you can search clock springs by vehicle. If the airbag module is shorted internally, a replacement driver airbag is what it takes.
B1347 as a driver airbag resistance code is Hyundai and Kia, with Genesis models built on the same restraint system reading it the same way. As with its sibling code, other manufacturers assign this number to systems that have nothing to do with the airbags, so confirm what you are working on before ordering parts.
Disconnect the battery and wait before opening any SRS connector. Unplug the driver airbag, look closely at the shorting bar in each half of the connector, and check for a terminal that has backed out of its cavity. Then measure resistance with a dummy load at the module connector to see whether the short sits on the airbag side or the module side of the clock spring. That one measurement narrows the job to a single part most of the time. Related codes: B1346, B1916, and B1925.
Related codes: B1346, B1916, B1925
Keep reading:
Code scope: Hyundai, Kia, Genesis. 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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