Parts for your 2013 Honda Elysion-Oxygen sensor

2013 Honda Elysion Oxygen Sensor — Purpose, Fitment and Service Advice

Yes — the 2013 Honda Elysion uses oxygen-sensing hardware. Honda service literature for the K24A 2.4‑litre petrol and J‑series V6 engines fitted to the Elysion identifies a front air–fuel ratio sensor (often called the primary HO2S) ahead of the catalytic converter and a rear heated oxygen sensor (secondary HO2S) after the cat for catalyst monitoring. This aligns with Japan’s J‑OBD/OBD‑II emissions requirements for petrol vehicles, which mandate closed‑loop control and catalyst diagnostics using oxygen/air–fuel sensors. Honda’s parts catalogues and workshop procedures for these engines consistently show these two sensors in the exhaust stream.

On the Elysion, the front sensor continuously measures the exhaust’s oxygen content to help the ECU fine‑tune fuel trims, keeping the air–fuel mix right on the money for smooth running, strong economy and low emissions. The rear sensor checks the catalytic converter’s efficiency by comparing readings before and after the cat. Together they keep the van behaving and passing emissions checks.

There’s no fixed replacement interval in Honda’s scheduled maintenance, but sensors are wear items. After high kilometres (often 160,000 km+), they can respond more slowly or drift, which can mean higher fuel use, a lazier throttle feel, rough idle, or a Check Engine light. Common fault codes can include P0134/P0135 (front sensor issues) or P0420 (catalyst efficiency — often detected by the rear sensor). If these pop up, proper diagnosis is the go.

• When replacing, note the Elysion uses two different sensors: a wideband air–fuel ratio sensor up front and a conventional heated O2 sensor at the rear. Don’t mix them up.
• Use quality, vehicle‑specific parts (often Denso or NTK for Honda applications). Many new sensors come pre‑coated on the threads — avoid extra anti‑seize if so.
• Warm the exhaust slightly to help removal, use an O2‑sensor socket, and take care not to twist the loom. Check for exhaust leaks that can skew readings.
• After installation, clear codes and allow a proper drive cycle so fuel trims relearn.

As part of routine servicing, it’s smart to visually check the sensor wiring and connectors, scan live data for sluggish switching or odd fuel trims, and address any exhaust leaks. Staying on top of these small details keeps the Elysion running sweet and saves fuel.

Popular questions about 2013 Honda Elysion oxygen sensors

How many oxygen sensors are on a 2013 Honda Elysion?
Most 2013 Elysion petrol models have two: a front air–fuel ratio sensor before the catalytic converter and a rear heated oxygen sensor after it. Both are required for proper closed‑loop fuelling and catalyst monitoring.

When should the oxygen sensor be replaced?
There’s no strict kilometre interval from Honda, but after around 160,000–200,000 km sensors can slow down. Replace if there are relevant fault codes, poor economy, rough running or failing emissions. Proactive replacement of a tired front sensor can restore fuel economy.

Can a bad oxygen sensor hurt the catalytic converter?
Yes. A failing front sensor can cause rich running that overheats and damages the cat over time. Address sensor faults promptly to protect the catalytic converter and keep fuel costs down.