05/28/2026
Have you ever been unsure which oxygen sensor needs to be replaced? This simple diagram can help you identify the correct one.
Example: 2014 Chevrolet Silverado 1500 5.3L
Vehicle is setting code P015B – O2 Sensor Delayed Response (Bank 1 Sensor 1)
On this engine, Bank 1 refers to the side of the engine where cylinder 1 is located, which is the driver side. Sensor 1 refers to the upstream oxygen sensor, meaning it is located before the catalytic converter.
Call us for help with all your O2 sensor needs! 605-532-3617