Question

2003 Kia Sedona 3.5L with codes P0151 and P0154, how hard is the sensor to change and where is it located?

Answer 1

Hi there,

The code is for the bank 2 sensor 1.

This is the sensor located in the exhaust manifold on the front bank closest to the radiator.

Answer 2

P0151 KIA - HO2S21 Circuit Low Voltage
Read more: https://www.autocodes.com/p0151_kia.html

P0154 KIA - HO2S21 Circuit No Activity Detected
Read more: https://www.autocodes.com/p0154_kia.html