B1326: Driver Front Sensor Grounded

Circuit fault

What B1326 means

The driver front impact sensor mounts up front, typically on the radiator support or inner fender where it can feel a collision early. Its harness runs back through the engine bay to the SRSCM. When insulation on that harness fails and a conductor touches chassis metal, the module reads a short to ground and stores B1326.

Notice that the code names the harness rather than the sensor. Hyundai separates wiring faults from sensor failures with different codes, which narrows the search considerably. The work is tracing a run of wire through the front of the car looking for the spot where it lost its insulation or got pinched.

Common causes

• Harness insulation rubbed through where the wire crosses a bracket or body seam
• Wiring pinched or crushed during a front end collision repair
• A connector full of water or road salt bridging a pin to ground
• A zip tie or clip pulled tight enough to cut into the harness jacket
• Rodent damage to the front harness exposing bare conductor

Crash data or hardware fault?

B1326 is a live electrical measurement, so the module reports it only while the short exists. That is the opposite of stored crash data, which the SRSCM writes once during a deployment and holds permanently where no scan tool can reach it. Repair the short and this code stops setting.

Does our reset clear it?

Module reset service is not the answer to a shorted harness. It clears locked crash data and returns the SRSCM to a ready state, which is what a deployed vehicle needs. A wire touching ground stays touching ground after any reset, and the code comes right back. Repair the wiring first, then reset the module only if it is also holding deployment data.

Which makes throw it

Hyundai is the make that reports B1326 in our lookup, and it reads on Hyundai scan tools as a harness fault on the driver side front impact sensor circuit rather than a problem with the sensor itself.

What to do next

Follow the sensor harness from the front of the car back toward the module with the connectors unplugged and check each conductor to ground with a meter, because that isolates the short faster than any visual sweep. Pay closest attention to spots where the harness passes a bracket, a seam, or a repaired section of the front end. Once the damaged section is found, repair it properly with the correct splice rather than tape. Related codes: B1102, B1327, B1065.