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2008 Hyundai Tucson B1347 Code: Air Bag Light On, DAB Replacement Failed

Model: 2008 Hyundai Tucson Fault Code: B1347 Posted: 2016-04-14 23:58

I own a 2008 Hyundai Tucson with 122,000 miles. My extended service plan expired over 22,000 miles ago. Recently, the air bag warning light came on and has remained illuminated. I live more than an hour from the nearest dealership, so I had a local mechanic perform a diagnostic. The scan revealed trouble code B1347: 'DAB Circuit Resistance Is Low' (for 2.7L V6 North American models). The technician replaced the Driver Air Bag (DAB) module twice—first with a simple code clear after replacement, then again after reinstallation—but the code persists and the light stays on. I'm now concerned about what else could be causing this issue. Since the airbag system is non-functional when the warning light is on, I need to understand whether the DAB module or another component (like wiring or clockspring) might actually be at fault. The code specifically mentions 'circuit resistance,' which suggests a potential wiring or connection problem rather than a faulty module. I have no other symptoms—no dashboard warnings, no handling issues—and my warranty has long expired. I'm looking for reliable guidance on how to properly diagnose and resolve this issue without relying on dealership services.

Related fault codes
B1347
Comments (7)
Anonymous 2016-04-15 07:47

This appears to be a 2008 North American Hyundai Tucson with a 2.7L V6 engine. First, stop replacing parts blindly—diagnose the root cause. Trouble Code: B1347 (2.7L V6, VIN D, Automatic) — DAB Circuit Resistance Is Low. The term 'circuit' indicates a wiring or electrical path issue, not necessarily a failed DAB module. If your mechanic simply replaced the part without performing proper diagnostic tests, they may have missed the real problem. Check for other error codes and any additional symptoms. A circuit resistance fault requires specific resistance value testing as per the OEM troubleshooting guide—this should be done with a professional scan tool and reference values.

Anonymous 2016-04-18 14:43

The mechanic only ran a code reader and concluded that the DAB module needed replacement. After some research, I suspect it might actually be the clockspring or the wiring harness connected to it—especially since the issue persists after multiple DAB replacements.

Anonymous 2016-04-18 14:44

I have no other issues besides this airbag warning light. The system won't function when the light is on, which is a safety concern. I'm completely out of warranty and at my wits' end—any advice would be greatly appreciated.

Anonymous 2016-04-18 14:55

A diagnostic code does not automatically mean a part is defective—it only indicates an issue in the circuit. The key here is 'circuit resistance.' This means there's likely a wiring or connection fault, not a failed DAB module. I strongly advise against replacing parts without proper testing. A basic code reader is insufficient—professional diagnostic tools are needed to perform resistance checks and follow the OEM troubleshooting procedure. The warning light isn't 'stupid'—it's doing its job by alerting you to a safety hazard. I recommend contacting a certified Hyundai dealer for professional diagnosis, as they have access to factory-level tools and repair procedures.

Anonymous 2016-04-18 14:58

I can no longer visit a dealership—I’ve moved, and the nearest one is over an hour away. This makes in-person service impractical.

Anonymous 2016-04-18 15:01

Could replacing the airbag wiring harness resolve this? My car has been to three different shops now, all claiming the DAB needs replacement—but no code clears after each visit. I haven’t been charged yet because the issue persists.

Anonymous 2016-04-18 16:03

The official Hyundai troubleshooting guide is available through OEM resources like ALLDATA, Mitchell, or Identifix. These tools provide detailed diagnostic procedures and expected resistance values for code B1347—essential for accurate diagnosis by a qualified technician.