O2 Sensor Heater Circuit (Bank 1, Sensor 1)
Usually no drivability symptoms, CEL on, Slightly worse fuel economy over time
| Job | Range |
|---|---|
| O2 sensor replacement (DIY) | $40–$100 |
| O2 sensor replacement (shop) | $100–$250 |
| Wiring repair at connector | $40–$150 |
These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.
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