Oxygen Sensors 1, 2 Chevrolet Impala 2.5L 2014-2020 Location and Replacement

In this video, I show you only the exact location of both Oxygen Sensor 1 (upstream) and Oxygen Sensor 2 (downstream) on a 2014-2020 Chevrolet Impala 2.5L.

Pinpointing the precise spots where these sensors are threaded into the exhaust system will save you time and eliminate the guesswork if you are planning a DIY replacement.

Common Symptoms of a Bad Oxygen Sensor:

• The check engine light comes on (frequently with EVAP or emissions codes like P0131, P0137, P0138, or P0140)
• A noticeable drop in fuel economy as the engine computer struggles to balance the air-fuel ratio
• Rough idling, engine engine hesitation, or a sluggish throttle response
• The vehicle fails a routine emissions or smog test
• A strong, unburned fuel smell or dark exhaust smoke coming from the tailpipe

Safety First

Always put safety first when working around the exhaust system. You must ensure the engine and exhaust pipes are completely cool to the touch before you begin; exhaust components reach extreme temperatures and can cause severe burns instantly. Wear your safety glasses and heavy-duty work gloves, make sure the vehicle is securely supported if raised, and maintain your full focus throughout the process.

Need Help? Ask an Expert

I am an experienced mechanic, and I am here to help you get your car back in top shape. If you run into a seized sensor, have trouble distinguishing between sensor 1 and sensor 2 on your vehicle, or are dealing with a tricky breakdown, feel free to drop a comment below. Leave your questions, and I will help you solve your car’s problem!