First time on, good forum. Service engine light on and the trouble code comes up as front O-2 sensor Circuit Bank 2 sensor 1. How do I know which sensor is bad? Right or left? Or should I replace both front sensors? Need to fix to pass emissions and get plates renewed. Any help is appreciated.

 

driver side is bank 1357, passenger side bank 2468. sensor one front. sensor two back. IIC passenger front.

 

Thanks, big help. You'll hear from me again as this is my first Land Rover and have had it only about 6 months. Thanks again.

 

amazon.com had the best prices on o2 sensors