Parts for your 2010 Honda Stream-Oxygen sensor

2010 Honda Stream oxygen sensor: what it does and when to replace it

Yes, the 2010 Honda Stream is fitted with oxygen sensors. Technical references including the Honda Stream RN6–RN9 service manual, Honda’s electronic parts catalogue, and application guides from Denso and NGK/NTK show this model uses a primary air–fuel ratio (A/F) sensor upstream in the exhaust manifold and a secondary heated oxygen (O2) sensor downstream after the catalytic converter. These sensors are part of the vehicle’s OBD‑II emissions control system and are standard on both the 1.8‑litre R18A and 2.0‑litre R20A petrol engines.

The oxygen sensor setup constantly measures the exhaust’s oxygen content to help the ECU fine‑tune fuel delivery. The upstream A/F sensor (wideband) handles precise mixture control for smooth running and good fuel economy, while the downstream O2 sensor monitors catalytic converter efficiency and flags any emissions faults. If either sensor drifts or fails, fuel use can climb, performance can feel a bit flat, and the Check Engine light will usually pop on.

As part of regular servicing on a 2010 Honda Stream, it’s smart to keep an eye on the O2 sensors from around 160,000 km or 8–10 years, whichever comes first. They can work longer, but response often slows with age, contamination, or exhaust leaks. A scan of fuel trims and sensor activity is the easiest health check, stored fault codes such as P0134, P0135, P0137, P0138, or P0420 are common signposts.

• Typical symptoms of a tired sensor: higher fuel consumption, rough idle, sluggish throttle, failed emissions test, sulphur smell, and a glowing MIL.
• Replacement tips: use quality sensors (Denso/NTK are OE suppliers), match the correct upstream A/F vs downstream O2 type, avoid universal splice‑ins where possible, and tighten to manufacturer torque (often around 40–45 N·m on many Hondas).
• Good practice: check for exhaust leaks before and after the cat, inspect the sensor harness for heat damage, avoid silicone sealants that can poison sensors, and clear codes then complete a proper drive cycle.

Both sensors are screw‑in (M18 x 1.5 thread) and usually come out cleanly with a 22 mm O2 sensor socket. If seized, a touch of heat on the bung helps. A dab of sensor‑safe anti‑seize on the threads (many new sensors arrive pre‑coated) and careful routing of the lead away from the exhaust will keep the Stream happy and efficient.

Popular questions about 2010 Honda Stream oxygen sensors

How many oxygen sensors does a 2010 Honda Stream have?
Most 2010 Streams have two: a primary wideband A/F sensor before the catalytic converter and a secondary narrowband O2 sensor after it. This applies to both R18A 1.8‑litre and R20A 2.0‑litre engines in common AU/NZ imports.

Can an oxygen sensor be cleaned instead of replaced?
No. Once the sensing element is contaminated or slow to respond, cleaning won’t reliably restore accuracy. Replacement is the proper fix, followed by clearing codes and a drive cycle to let the ECU relearn.

What’s a sensible replacement interval?
There’s no strict schedule, but many technicians recommend testing from 160,000 km onward and replacing when response slows or codes appear. If fuel economy drops noticeably with no other cause, an ageing sensor is a usual suspect.