Parts for your 2006 Honda Stream-Temperature sensors

2006 Honda Stream Temperature Sensors — What They Do and How to Look After Them

Based on Honda technical references — including the 2006 Honda Stream workshop manual (PGM-FI, Cooling and HVAC sections), OBD-II diagnostic charts used by Honda dealers, and Honda parts catalogues listing the Engine Coolant Temperature (ECT) sensor and Intake Air Temperature (IAT) sensor — temperature sensors are absolutely fitted to the 2006 Honda Stream (both R18A/R20A and late K-series variants). They’re core inputs for the ECU, the instrument cluster, and the climate system.

On this model you’ll typically find: an ECT sensor threaded into the cooling gallery to report engine heat to the ECU and dash gauge, an IAT sensor to let the ECU adjust fuelling and ignition based on incoming air temperature, an ambient temp sensor up front for A/C logic, and, on autos, a transmission fluid temp sensor. Together, they help the Stream start cleanly on cold mornings, keep emissions down, maintain good fuel economy, and prevent overheating under load.

While these sensors aren’t regular “consumables”, they do benefit from attention during routine servicing:

• Cooling system care: Stale or contaminated coolant can attack sensor tips. Stick with the correct Honda Type 2 coolant and refresh at the recommended interval. Always bleed air properly after work under the bonnet.
• Connector checks: Heat and age can make plugs brittle. Look for green corrosion, broken clips, or oil-soaked loom tape. A quick clean with proper contact cleaner often fixes flaky readings.
• Scan before you spanner: If the Stream shows a rough idle, hard cold starts, the radiator fans running constantly, or the temp gauge behaving oddly, scan for codes like P0118/P0117 (ECT) or P0113/P0112 (IAT). Live data will confirm if a sensor is lying.
• Replacement tips: Use quality OEM-equivalent sensors. Fit a new sealing washer or O-ring as supplied, and only use sealant if Honda specifies it. Tighten to the correct spec and route the harness exactly as it left the factory.

Most owners will only replace a temperature sensor when there’s a confirmed fault. As preventative care, keep the cooling system healthy, check connectors every 20–30,000 kilometres, and address any warning lights early. A well-looked-after set of sensors helps the 2006 Honda Stream run sweet, sip fuel, and keep its cool on hot Aussie and Kiwi summer days.

Popular questions about 2006 Honda Stream temperature sensors

How can someone tell if the ECT sensor on a 2006 Honda Stream is failing?

Common signs include the radiator fans running constantly, a cold engine that idles too high or too low, poor fuel economy, or a temp gauge that reads oddly. A scan tool showing unrealistic coolant temps (for example, stuck at -40°C or 130°C) is the giveaway. Fault codes such as P0117 or P0118 often appear.

Do temperature sensors need routine replacement on this model?

No, they’re not a time-based service item. Replace only when diagnostics confirm a fault. Focus on fresh coolant at the right interval, intact wiring, and clean connectors. That approach prevents many sensor issues without unnecessary parts swaps.

Is it safe to drive with a dodgy temperature sensor?

Short distances may be possible, but it’s not ideal. A faulty ECT or IAT can cause rich running, increased fuel use, poor drivability, and potential overheating because the ECU and fans may not react correctly. It’s best to diagnose and fix before a longer trip.