Parts for your 2008 Nissan Primera-Temperature sensors

2008 Nissan Primera Temperature Sensors — What They Do and How to Look After Them

Based on technical references including the Nissan Primera P12 Service Manual (Engine Control “EC” and Cooling “CO” sections, 2002–2007, applicable to late-registered 2008 cars), Autodata, and the Haynes Nissan Primera 2002–2008 manual, the 2008 Nissan Primera is fitted with multiple temperature sensors. These include the Engine Coolant Temperature (ECT) sensor and the Intake Air Temperature (IAT) sensor, plus an ambient sensor on models with automatic climate control. The ECM uses these inputs for fuelling, ignition timing, idle control, fan operation, and to drive the temp reading on the dash via the CAN network.

On a P12 Primera, the ECT sensor monitors coolant temp at the engine and tells the ECM how warm the motor is. That’s crucial for cold starts, warm-up enrichment, emissions control, and switching the radiator fans on and off. The IAT sensor reports the temperature of the air entering the engine, helping the ECM trim fuelling for density changes — handy whether it’s a frosty South Island morning or a hot arvo under the Aussie sun. If equipped, the ambient sensor supports HVAC performance and accuracy.

There’s no fixed replacement interval for temperature sensors on the Primera