Oxygen Sensor for 2017-2021 Honda Civic - Walker 250-241256

Walker Products 250-241256 oxygen sensor for the 2017-2021 Honda Civic 4-cylinder 2.0L measures the oxygen in the exhaust gas to show combustion efficiency. It is made for its specific application and fitment position, and it returns the diagnostic feedback the ECU requires.

• Monitors exhaust gases to help reduce pollutants
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gas
• Measures oxygen levels so the air-fuel mixture can be fine-tuned to support fuel economy
• Electrodes made of a gas-permeable platinum layer
• Narrow-band sensor with a 4-wire connection

Quick facts

• Part: Walker Products 250-241256 oxygen sensor
• Fits: 2017-2021 Honda Civic 4-cylinder 2.0L
• Position: Downstream
• Condition: New

A failing sensor can show up as the engine running poorly, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. Before you replace the sensor, rule out physical damage to the wiring harness and connector, and have the stored ECU fault codes read to see which sensor or system they relate to.

Fits

It fits the 2017-2021 and 2025 Honda Civic 4-cylinder 2.0L in the downstream position. This listing is a single sensor, and the 2.0L engine takes one in that position.

Specifications