Downstream O2 Sensor Replacement Cost: Price Guide Amazon Com Veifniy Upstream& Set Direct

Author Dalbo 07 Mar 2026

Hiring a mechanic to replace your oxygen sensor typically costs between $150 and $600, including parts and labor Upstream and downstream o2 sensor locations for your 2018 land rover discovery sport Labor rates vary by location, and they account for.

2X Downstream Oxygen O2 Sensor OEM for BMW X3 X5 Z4 128i 325i 328i 330i

Downstream O2 Sensor Replacement Cost: Price Guide Amazon Com Veifniy Upstream& Set Direct

O2 sensor replacement costs $150 to $500 per sensor including labor The downstream sensor should stay steadier when the converter is working properly Most cars have 2 to 4 oxygen sensors

Upstream sensors (before the catalytic converter) are more critical and more.

An oxygen (o2) sensor replacement cost estimate is a total price range that combines sensor (parts) price, labor time, shop labor rate, and any extras like diagnostic fees, shop supplies, and. Learn symptoms, cost factors, and when to replace before damaging your engine. If your diagnostic scanner reveals a faulty oxygen sensor, you are likely wondering how much is it to replace an o2 sensor and whether you can handle the job yourself A p0420 catalyst system efficiency below threshold code means the downstream o2 sensor sees too much residual oxygen — the converter substrate is failing

Signs of a bad o2 sensor Symptoms include poor gas mileage, rough engine idle, starting trouble, and even failure of the catalytic converter Often, the check engine light will come on to provide obd ii. It is a 4‑wire heated.