Walker Products Oxygen Sensor P/N:250-24493
Walker Products 250-25148 oxygen sensor for the 2018-2022 Honda Accord 4-cylinder 1.5L or 2.0L and other vehicles measures the oxygen in the exhaust gas. Made for the upstream position, it gives the ECU the diagnostic feedback it needs.
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or light the malfunction indicator lamp. Those signs alone do not prove the sensor is at fault, since a vacuum leak can cause similar symptoms. This listing is a single sensor; one goes in the upstream position.
It is a direct-fit replacement for the 2018-2022 Honda Accord 4-cylinder 1.5L or 2.0L, the 2019-2025 Acura RDX 4-cylinder 2.0L and the 2021-2025 Acura TLX 4-cylinder 2.0L.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Is this Walker Products oxygen sensor a wide-band type?
Yes. Walker Products 250-25148 is a wide-band oxygen sensor that determines the oxygen content of the exhaust gas.
Is this an oxygen sensor for the 2019-2025 Acura RDX 4-cylinder 2.0L?
Yes. Walker Products 250-25148 is a direct-fit replacement for the 2019-2025 Acura RDX 4-cylinder 2.0L, and the engine takes one sensor in the upstream position.
Will a failing upstream oxygen sensor turn on the malfunction indicator light?
Yes, it can: a failed sensor may light the malfunction indicator lamp, and newer vehicles can store fault codes in the ECU, some of them tied to the sensor.
What is the coating on the electrodes of this oxygen sensor for?
The electrodes have a gas-permeable platinum layer, and the coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases.
Is this oxygen sensor an upstream or a downstream unit?
Upstream. Walker Products 250-25148 is made for the upstream position, and this listing is one sensor.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.