Parts for your 2017 Honda Cr-v-Oxygen sensor

2017 Honda CR‑V oxygen sensor: what it does and when to replace it

Yes, the 2017 Honda CR‑V is fitted with oxygen sensors. Technical references including the Honda CR‑V (2017–2019) Service Manual (Fuel & Emissions), Honda’s electronic parts catalogue for the L15B 1.5‑litre turbo and K24 2.4‑litre engines, typical OBD‑II diagnostic coverage (e.g., DTCs for A/F Sensor 1 and Secondary HO2S), and emissions compliance requirements (ADR 79/04 and equivalent NZTA/OBD rules) all show the model uses a wideband air‑fuel ratio (A/F) sensor upstream and a conventional heated oxygen sensor (HO2S) downstream of the catalytic converter.

On this CR‑V, the upstream A/F sensor continually tells the engine computer how rich or lean the mixture is, letting it trim fuelling for smooth running, good economy, and low emissions. The downstream O2 sensor monitors catalytic converter efficiency. Together, they help with cold starts, mid‑range driveability, and keeping the check‑engine light off.

Unlike filters or spark plugs, oxygen sensors aren’t usually on a fixed replacement interval in the service schedule. They’re monitored by the car’s OBD system. Still, they’re wear items. By roughly 160,000–200,000 kilometres many will slow down or drift, especially if the engine has had oil or coolant contamination, silicone sealant exposure, or persistent rich/lean running.

• Common signs of a crook sensor: poorer fuel economy, rough idle, hesitation, failed WOF/rego emissions test, or fault codes (e.g., P0134, P0135, P0141, P0137/P0138, wideband A/F related codes).
• Good servicing habits: fix exhaust leaks before the sensors, keep the intake tight and free of oil vapours, and avoid silicone sprays/sealants near the intake and exhaust.

When replacement is needed, go for OEM‑quality sensors that match the connector and heater spec for the CR‑V’s engine. Work on a cold exhaust, use a proper O2‑sensor socket, and don’t twist the harness. Light penetrating oil on the threads helps, refit with the correct washer and torque to the Honda spec in the workshop manual. After installation, clear codes and complete a proper drive cycle so the ECU can relearn trims and run catalyst tests. If the vehicle has high kilometres and the downstream sensor is original, it’s sensible to evaluate both sensors together, but only replace what diagnosis proves is slow or out of range.

Owners can expect crisp throttle response, stable idle, and better fuel figures when the A/F and O2 sensors are healthy—exactly what a modern 2017 CR‑V is designed to deliver.

Technical sources consulted: Honda CR‑V (2017–2019) Service Manual—Fuel & Emissions (A/F Sensor 1 and Secondary HO2S procedures and DTCs), Honda Electronic Parts Catalogue listings for A/F Sensor (Primary) and O2 Sensor (Secondary) on 2017 CR‑V, 2017 Honda CR‑V Owner’s Manual—Emissions Control System overview, OBD‑II/ADR 79/04 emissions diagnostics requirements.

Popular questions

How many oxygen sensors does a 2017 Honda CR‑V have?

Typically two. There’s a wideband A/F sensor before the catalytic converter (Sensor 1) and a conventional heated oxygen sensor after the converter (Sensor 2). This applies to both the 1.5‑litre turbo and the 2.4‑litre engines used in various markets.

When should the oxygen sensor be replaced on a 2017 CR‑V?

There’s no fixed interval in the normal service schedule. Replace when diagnostics point to a faulty or slow sensor, when relevant fault codes appear, or when symptoms like poor fuel economy or rough running occur. Many original sensors last past 160,000 kilometres, age, contamination, and heat cycles are the main limiters.

Can an oxygen sensor be cleaned instead of replaced?

Not effectively. External soot can be wiped away, but the sensing element can’t be restored by cleaning. If a sensor is slow, contaminated, or electrically out of spec, replacement is the correct fix.