Mon-Fri: 7:30AM-5:00PM Our Reviews:

We will be closed on Christmas Eve and the week of the 27th to the January 2nd

Oxygen (O2) Sensor Video

The oxygen or O2 sensor is located in your exhaust system and measures the air/fuel ratio in your engine. By sensing the amount of oxygen in the exhaust, it helps the engine adjust the amount of fuel that it consumes. To maintain a proper air/fuel mixture in your engine, it is important that the oxygen sensors are working properly.

If your car truck or SUV experiences a sudden increase in fuel consumption or a rough idle, the O2 sensor is a potential culprit. Replacing your oxygen sensor can be inexpensive compared to leaving it unchecked, which can cause poor engine performance, low fuel efficiency, poor emissions, and even a damaged catalytic converter. If you're experiencing a rough idle, poor fuel economy, or any other related issue, call Dennis' Auto Repair in Fresno at 559-264-6443 or schedule an appointment online today.