Check Engine light code P1131 & P0135

Check Engine light on my 2000 Windstar.
DTC code P0135 and code 1130
Any suggestion?
Thanks a lot

P0135- O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1130- Lack Of HO2S-11, Fuel Trim At Limit

Sounds like an O2 sensor dead. Bank 1 is on the back side, IIRC

Thanks a lot.
Have you got any idea about how much will it cost to fix the problem in a garage? I'm not able to the work by myself.
Is it safe to continue to drive the car in that condition or it could cause bigger problems?