P0130 - Where is the o2 sensor 1 located in a Hyundai Tucson 2008?

Question

My check engine light came on and it is because of the Bank 1 Sensor 1 (o2 sensor) in a 2008 Hyundai Tucson. Where is this located and how difficult is it to replace?

Thank you!

Kelli

Answer 1

The one closest to the engine is "Bank 1 - Sensor 1"

Bank 1 is always the side of the engine with cylinder #1. Bank 2 is always the side of the engine with cylinder #2. This only matters on the V6, not on the inline 4 cyl. Bank 1 is the bank of cylinders on the firewall side. Bank 2 is the bank of cylinders on the radiator side.

Sensor 1 is the O2 sensor before the cat. Sensor 2 is the O2 sensor after the cat.