Parts for your 2000 Daihatsu Yrv-Oxygen sensor

2000 Daihatsu YRV Oxygen Sensor (Lambda) — Purpose, Care, and Replacement

Yes, the 2000 Daihatsu YRV uses an oxygen (lambda) sensor. This is documented in the Daihatsu YRV Service Manual for the K3‑VE/K3‑VET EFI/OBD system, as well as major application catalogues from Bosch and NGK/NTK that list upstream and, in many Euro/AU/NZ variants, downstream sensors for the YRV. Those sources note a front sensor for air–fuel control and, on emissions-compliant models, a rear sensor for catalytic converter monitoring.

On this tidy little people-mover, the oxygen sensor is a key emissions and fuel‑economy component. It samples oxygen levels in the exhaust so the ECU can trim fuelling towards a 14.7:1 air–fuel ratio. The upstream sensor does the fine control that keeps the YRV smooth and thrifty, while the downstream sensor (where fitted) checks that the cat is doing its job. Healthy sensors mean better cold starts, nicer throttle response, and reduced petrol use across Kiwi and Aussie driving conditions.

Typical service advice is to inspect at around 100,000 km and expect replacement somewhere between 120,000–160,000 km, or sooner if fault codes pop up. Major suppliers like Denso and NTK also recommend replacing aged sensors proactively to protect the catalytic converter. When swapping one out, choose quality OEM‑equivalent parts, avoid touching or contaminating the sensing tip, and route the lead clear of heat. Most M18 sensors tighten to roughly 40–45 N·m (as per common Denso/Bosch install guidance), always follow the torque noted with the replacement part. Use only the supplied thread compound if included—no extra sealants.

• Common signs it’s time: higher fuel use, rough idle, black exhaust smoke, sulphur smell, sluggish performance, or a check‑engine light (codes like P0130–P0141 or lean/rich codes such as P0171/P0172).
• Before blaming the sensor, rule out vacuum leaks, intake splits, tired spark plugs, or a lazy coolant temp sensor—they can all skew fuelling.
• After replacement: clear DTCs, check for exhaust leaks, and let the ECU complete a few drive cycles so fuel trims settle.

Many 2000 YRV models have one sensor before the cat, Euro/AU/NZ variants often add a second after the cat. A quick look under the car or a check by VIN/engine code will confirm the exact setup.

Popular questions

How many oxygen sensors does a 2000 Daihatsu YRV have?
Most early YRV 1.3 petrol models have one upstream sensor. Markets meeting stricter emissions (including many AU/NZ and Euro cars) often run two—one before and one after the catalytic converter. The sure way to tell is to check by VIN or look along the exhaust for a second plug after the cat.

What are the symptoms of a failing oxygen sensor on a YRV?
Expect higher fuel consumption, a check‑engine light, rough idle, hesitant take‑off, or a whiff of rotten‑egg odour. Scan tools may show codes like P0130–P0141 or fuel‑trim issues. Left too long, a lazy sensor can overheat the cat and cost a lot more than a sensor swap.

Can an oxygen sensor be cleaned or should it just be replaced?
Cleaning generally doesn’t work and risks damaging the sensing element. If the sensor is slow, contaminated, or throwing heater circuit faults, replacement with a correct‑spec unit is the reliable fix.