Parts for your 2016 Honda Cr-v-Oxygen sensor

2016 Honda CR‑V Oxygen Sensor: Purpose, Service Tips, and FAQs

Yes, the 2016 Honda CR‑V absolutely uses oxygen-sensing hardware. Honda’s factory service information for the 2015–2016 CR‑V (Fuel & Emissions sections covering the Primary HO2S/Air‑Fuel Ratio Sensor and the Secondary HO2S), OEM parts catalogues, and major sensor catalogues from Denso and NGK/NTK all specify two sensors on the 2.4‑litre K24W engine: a primary wideband air‑fuel ratio (A/F) sensor mounted in the exhaust manifold and a secondary heated oxygen sensor (O2) after the catalytic converter. OBD‑II legislation also requires the downstream sensor to monitor the catalyst, so it’s very much relevant on this model.

The A/F sensor’s job is to feed the ECU precise mixture data so it can trim fuel on the fly, keeping the engine running clean and efficient during everyday driving. The downstream O2 sensor checks how well the catalytic converter is doing and helps the ECU confirm the mixture strategy is on point. Together they protect fuel economy, reduce emissions, and keep the CR‑V feeling smooth and responsive.

While there’s no strict replacement interval, these sensors are wear items. Many owners consider inspection around 100,000–150,000 km and replacement somewhere between 160,000–200,000 km, or sooner if faults show up. Watch for:

• Check Engine Light with codes such as P0135, P0141, P0137/P0138, P2195/P2197
• Heavier fuel use, rough idle, flat spots, or a failed WOF/rego emissions check

Good servicing starts with proper diagnosis. Scan live data and fuel trims, check for exhaust leaks, and inspect the wiring and connectors before condemning a sensor. When replacement is needed, stick with quality OEM‑equivalent parts (Denso or NTK/NGK are common on Honda). Many new sensors come pre‑coated, if anti‑seize is used, apply only a tiny amount to the threads and keep it off the tip. Always torque to the manufacturer’s spec, route the harness exactly like the original, clear codes, and confirm proper operation by verifying trims and O2/A/F activity once warm.

To help sensors live a long life, fix vacuum or exhaust leaks promptly, keep up with air filter and scheduled servicing, and use good‑quality fuel. That way, the CR‑V’s ECU gets clean, accurate readings and your litre‑per‑100 km stays in the happy zone.

How many oxygen sensors does a 2016 Honda CR‑V have?

It has two. There’s a primary wideband air‑fuel ratio (A/F) sensor in the exhaust manifold and a secondary heated oxygen sensor after the catalytic converter. The first handles precise fuel control, the second monitors the cat’s performance and overall emissions health.

When should the oxygen sensors be replaced on a 2016 CR‑V?

There’s no fixed interval, but many are replaced between 160,000–200,000 km or when symptoms or fault codes arise. If fuel economy dips, the Check Engine Light appears, or emissions testing fails, test first, then replace with quality parts if confirmed faulty.

Can it be driven with a faulty oxygen sensor?

Short trips, maybe—but it’s not ideal. A bad sensor can push the engine rich, hurting fuel economy and risking the catalytic converter. Get it diagnosed and sorted promptly to avoid bigger costs and to keep the CR‑V driving nicely.