Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - B59L TO F106RFCOMPONENT CONNECTOR END VIEWSB198 FUEL COMPOSITION SENSOR (FHS)
2013 Buick Regal Turbo Premium, Standard Trans
B198 Fuel Composition Sensor (FHS)
2013 Buick Regal Turbo Premium, Standard TransSECTION B198 Fuel Composition Sensor (FHS)
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | Service by Harness - See Part Catalog | Pending | Pending | Service by Harness - See Part Catalog | Service by Harness - See Part Catalog | Not Available | Not Available |
B198 Fuel Composition Sensor (FHS)
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | VT/BU | 5294 | Powertrain Main Relay Fused Supply (5) | I | - |
| 2 | 0.5 | BK | 1350 | Ground | I | - |
| 3 | 0.5 | WH | 1579 | Fuel Temperature/ Composition Signal | I | - |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.