DTC B0098 – Front Impact Sensor Circuit Fault

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DTC B0098 – Front Impact Sensor Circuit Fault

What Does DTC B0098 Mean?

DTC B0098 indicates that the Supplemental Restraint System (SRS) has detected a fault in the front impact sensor circuit. The exact description may vary by manufacturer, but it generally points to an electrical problem involving the impact sensor, wiring, connectors, or the SRS control module.

Severity

High. This fault may prevent the airbag system from deploying correctly during a collision.

Can You Drive with B0098?

Yes, the vehicle can usually be driven, but the airbag system may not provide full protection. The fault should be repaired as soon as possible.

Symptoms

  • SRS or Airbag warning light illuminated.
  • B0098 stored in the SRS module.
  • Airbag system disabled.
  • SRS warning message displayed.

Common Causes

  • Defective front impact sensor.
  • Open or short circuit in the sensor wiring.
  • Loose, damaged, or corroded connector.
  • Water intrusion in the wiring harness.
  • Faulty SRS control module.

How to Diagnose B0098

  1. Read all SRS diagnostic trouble codes.
  2. Inspect the front impact sensor and connector.
  3. Check the wiring harness for damage or corrosion.
  4. Measure circuit continuity according to the factory service manual.
  5. Repair the fault, clear the code, and verify that it does not return.

Typical Sensor Circuit

     SRS Control Module
             │
             │
      Wiring Harness
             │
             ▼
      Front Connector
             │
             ▼
     Front Impact Sensor

Estimated Repair Cost

  • Wiring repair: $50–150
  • Connector replacement: $30–100
  • Impact sensor replacement: $100–350
  • SRS module replacement: $300–900

Related DTCs

  • B0096
  • B0097
  • B0099
  • B0100

Frequently Asked Questions

Can a damaged connector trigger B0098?

Yes. Loose, bent, or corroded terminals are common causes of this code.

Will replacing the impact sensor always fix B0098?

No. The wiring and connector should be inspected before replacing the sensor.

Does B0098 have the same meaning on all vehicles?

No. Manufacturers may use different descriptions for this code. Always verify the definition using the factory service information for the specific vehicle.

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