B0102 on Hyundai
Electronic Side Sensor Malfunction
B0102 on Hyundai vehicles indicates electronic side sensor malfunction. Au7o has documented this code across 1 Hyundai model — most commonly on Elantra. This body/safety code indicates a malfunction with an electronic crash sensor used by the airbag (SRS) system, typically a frontal or side impact sensor on one side of the vehicle. The airbag control module continuously checks these sensors so it can deploy airbags and tensioners correctly in a crash, and it sets this code when a sensor reports an incorrect identity, fails, or its circuit is faulty. The airbag warning light will usually be on. Because it can compromise crash protection, it should be diagnosed promptly.
Common Causes of B0102
- •Faulty electronic side/frontal impact sensor
- •Open, shorted, or damaged sensor wiring harness
- •Corroded or loose sensor connector
- •Wrong or incompatible replacement sensor installed
- •Damage from a prior collision or water intrusion
- •Poor ground or connection in the SRS circuit
- •Faulty airbag control module (less common)
B0102 on Hyundai by Model
Hyundai Elantra(1 issue)
- Airbag Sensor and Control Module Malfunction2007-2013
Multiple airbag-related recalls affect Elantras due to driver seat track position sensor issues and passenger weight sensor contamination. The driver's airbag may deploy at incorrect pressure, and the passenger airbag may deploy regardless of occupant weight. Nearly 285,000 vehicles were recalled.
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View B0102 across all makes →Frequently Asked Questions
What does B0102 mean on Hyundai?▼
B0102 stands for "Electronic Side Sensor Malfunction." This body/safety code indicates a malfunction with an electronic crash sensor used by the airbag (SRS) system, typically a frontal or side impact sensor on one side of the vehicle. The airbag control module continuously checks these sensors so it can deploy airbags and tensioners correctly in a crash, and it sets this code when a sensor reports an incorrect identity, fails, or its circuit is faulty. The airbag warning light will usually be on. Because it can compromise crash protection, it should be diagnosed promptly. On Hyundai specifically, this code is documented across 1 model.
What causes B0102 on Hyundai vehicles?▼
Common causes on Hyundai: Faulty electronic side/frontal impact sensor, Open, shorted, or damaged sensor wiring harness, Corroded or loose sensor connector, Wrong or incompatible replacement sensor installed, Damage from a prior collision or water intrusion. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B0102 on a Hyundai?▼
Repair costs vary widely depending on the root cause and specific Hyundai model.
Which Hyundai models have B0102 documented?▼
Au7o has documented B0102 on 1 Hyundai model: Elantra.