What causes the excessive resistance in the B1346 driver's seat airbag?
2 Answers
It may be due to poor contact in the airbag connector or a broken airbag clock spring. Here are the relevant details: Specific causes: If the car displays excessive airbag resistance, you can clean the connector box and check for loose connections. If the issue persists, remove the airbag and replace it with a 2 to 3 ohm resistor to see if the fault code remains. If the fault code no longer appears, it indicates an internal airbag fault, and the airbag needs to be replaced. Check if the airbag connector is normal, with no signs of burning, etc. Measure the resistance of the airbag wiring harness. If the resistance is abnormal, simply replace the wiring harness. Airbag location: Airbags are positioned in the front passenger and driver seats, the front and rear sides of the vehicle, and the roof in three directions. The airbag consists of three parts: the airbag itself, sensors, and the inflation system. The function of the airbag is to reduce the severity of occupant injuries during a collision, prevent secondary collisions, or protect occupants from being thrown out of their seats in dangerous situations such as vehicle rollovers.
I encountered the B1346 code, which means the driver's seat airbag resistance is too high. The most common causes are loose wiring harness connectors or corrosion/rust. My car had this issue after rain before, where moisture intrusion caused oxidation at the connection points, increasing resistance. If the resistance is high, the airbag may not function properly during a collision, compromising safety. I immediately went to a professional repair shop, where they used diagnostic tools to scan the resistance values and found a poor contact in a connector under the steering wheel. After cleaning and tightening, the issue was resolved. I recommend not attempting DIY fixes, as airbags are sensitive and improper handling may cause accidental deployment or complete failure. During regular maintenance, check these connection points for tightness and cleanliness, especially in humid seasons to prevent issues. It's best to periodically monitor the system status with a scanner to detect abnormalities early.
