Oxygen Sensor Replacement Cost

What owners actually paid

What this repair is

Oxygen sensors measure the exhaust so the engine computer can tune the fuel mix. A lazy or dead sensor is one of the most common check-engine-light causes and quietly costs fuel economy. Cars have two to four of them; the price depends on which one and how rusted its threads are.

Oxygen Sensor Replacement cost by vehicle

The most-repaired vehicles first. Each range is the middle half of real invoices for that vehicle; vehicles with their own page carry the full breakdown, real repair reports and a printable Fair Price Report.

Middle half of real invoices (25th–75th percentile) for that make and model, parts + labor.

What moves the price

• Upstream vs. downstream — upstream air-fuel sensors cost more than downstream oxygen sensors.
• Seized threads — a sensor rusted into the exhaust adds time.
• One or several — V-engines carry four; shops replace what the codes name.

Quotes near the low end usually mean one downstream sensor in the open. Quotes near the high end usually mean upstream air-fuel sensor, seized sensor extracted, two or more replaced.

The complaints behind this repair

Owners who end up with this repair most often came in with: Check Engine Light On · Car Running Rough or Misfiring. Each of those pages shows how often the complaint actually ends in this fix, and what the alternatives cost.

Not sure what's wrong yet?

Start from what the car is doing. The FixDozer drill asks a few plain questions and shows which fixes that complaint usually turns out to be — with the real cost of each.