- Is this the upstream or downstream sensor?
- It is the downstream sensor, mounted after the catalytic converter. The upstream sensor ahead of the converter is a different part.
- Which cars does it fit?
- 2003–2008 Toyota Corolla, 2003–2008 Toyota Matrix and 2003–2008 Pontiac Vibe.
- Does it need wiring or splicing?
- No. It is an OE-style sensor with the factory connector, so it plugs in directly.
- Will it fix a P0420 code?
- Only if the downstream sensor is the cause. P0420 can also come from a worn catalytic converter, exhaust leaks or wiring, so diagnose before replacing.
- Is it a genuine Denso part?
- Yes, it is Denso's 234-4233 downstream oxygen sensor, the same part number used for these vehicles.
- What is in the box?
- The sensor itself with its factory-style connector. No tools or adapters are included.
- Where is the DENSO Oxygen Sensor Down Stream 234-4233 cheapest?
- At Amazon, for $14.99, 75% under what the other stores charge, as of our latest check.
- What do buyers say about the DENSO Oxygen Sensor Down Stream 234-4233?
- Rated 4.8 out of 5 from 26 ratings.
- Where can I buy the DENSO Oxygen Sensor Down Stream 234-4233?
- 16 stores we checked sell it, including ZAMOZUAN.com, Amazon, eBay, Walmart, SparkPlugs.com Family.