the two codes are p0158 (O2 sensor i think) and a double p1193 that said manifacturer something and some other fault. could the oxygen sensor be causing the other two codes? and where can i get the sensor for bank two sensor 2?

 

P1193 Oxygen Sensor Heater Circuit Open Downstream , P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) . What year and how many miles on your truck?
Mike

 

There are 104k miles on the truck and it's a 97.

 

With that mileage your 02's are getting tired, time to replace all 4 02's for starters, then make sure your plugs and wires are in good shape.
Mike

 

I agree with the above posts. Its time to replace your land-rover oxygen sensor with a new one. I had mine replaced at 100k miles and its now working great. It is also good to check on your spark plugs and see to it that it isn't worn out. or it would be best to have your car tune-up..