Cost of replacement of O2 & ABS speed sensors

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your LS400. The cost to replace O2 sensors and ABS speed sensors can vary based on your location, the specific repair shop, and whether the parts are OEM or aftermarket. Since you mentioned the ABS and VSC lights are on, there might be issues with your braking system or traction control, which may require diagnosis beyond just replacing the sensors. It would be best to have a certified mechanic inspect your vehicle to confirm the exact issue and provide a more accurate estimate. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!