Parts for your 2010 Nissan Serena-Oxygen sensor

2010 Nissan Serena oxygen sensor

Technical sources confirm the 2010 Nissan Serena is fitted with oxygen-sensing hardware. The Nissan Factory Service Manual for the C25/C26 Serena (EC section) specifies a front air–fuel ratio sensor (wideband) and a rear heated oxygen sensor for the MR20DE 2.0‑litre petrol engine. Nissan’s parts catalogue lists common part numbers such as 22693-1KT0A (front A/F sensor) and 22690-1KT0A (rear O2 sensor), while application guides from OE suppliers like Denso and NTK/NGK note the same arrangement. This setup is consistent with OBD‑II requirements for catalyst monitoring and closed‑loop fuel control.

On the 2010 Serena, the front air–fuel ratio sensor lives in the exhaust manifold and constantly measures mixture so the ECU can fine‑tune fuelling. The rear oxygen sensor sits after the catalytic converter to keep tabs on the cat’s efficiency. Together, they help the Serena run smoothly, sip less fuel, and keep emissions in check. If either goes out of whack, the check engine light often appears and fuel economy can drop.

For servicing, it pays to think of these sensors as consumables. In typical Aussie and Kiwi conditions, many workshops see reliable service life around 120,000–160,000 km for the front A/F sensor and a bit longer for the rear O2 sensor, though they can fail earlier with short trips, oil burning, silicone sealant exposure, or coolant contamination. Telltales include higher fuel use, rough idle, a whiff of rotten eggs, sluggish take‑off, or codes like P0130–P0161.

Replacement is straightforward with the right approach. Use a quality direct‑fit sensor (NTK/NGK, Denso or genuine Nissan), avoid universal splice types, and don’t contaminate the tip with anti‑seize or fingerprints. If the new sensor doesn’t come pre‑coated, use only a tiny amount of sensor‑safe anti‑seize on threads and torque to spec from the FSM. Disconnect the battery, let the exhaust cool, and wear eye protection.

• Run a scan tool first and check live data, confirm there are no exhaust leaks before the sensor.
• Verify heater circuit resistance and power/earth on the connector.
• Soak stubborn sensors with penetrant, replace crush washers or gaskets.
• After fitting, clear codes and complete a drive cycle so the ECU relearns fuel trims.

With the front A/F sensor in the manifold and the rear O2 sensor in the pipe after the cat, access is typically from the engine bay (front) and under the vehicle (rear). Sticking to regular checks during major services helps the Serena stay economical and compliant.

Popular questions

How many oxygen sensors does a 2010 Nissan Serena have and where are they?

Most 2010 Serena MR20DE models have two: a front air–fuel ratio sensor in the exhaust manifold and a rear heated oxygen sensor after the catalytic converter in the front pipe. This allows the ECU to control fuelling and verify catalyst efficiency.

How often should the oxygen sensors be replaced?

There’s no strict time limit, but many workshops suggest inspection around 100,000 km and proactive replacement of the front A/F sensor between 120,000–160,000 km, sooner if there are drivability issues or fault codes. The rear sensor can last longer but should be replaced if it’s sluggish or the cat efficiency test fails.

Is it safe to drive with a faulty oxygen sensor?

It will usually still run, but fuelling can go rich, hurting economy and risking damage to the catalytic converter. Prolonged driving with a failed sensor can also mask other issues. It’s best to diagnose and sort it promptly to protect the cat and keep fuel costs down.