Parts for your 2007 Nissan Navara-Temperature sensors

2007 Nissan Navara temperature sensors

Temperature sensors are very much used and relevant on the 2007 Nissan Navara (D40). Nissan’s factory technical documentation confirms multiple temperature inputs across the vehicle: the Engine Coolant Temperature (ECT) sensor and the Intake Air Temperature (IAT) sensor are detailed in the Engine Control (EC) section of the Navara D40 Service Manual (2006–2010), the automatic transmission fluid (ATF) temperature sensor is shown in the Automatic Transmission (AT) section for RE5R05A-equipped models, the Heating and Air Conditioning (HA) section lists the ambient air temperature sensor, and diesel variants note a fuel temperature input for injection correction. These sources make it clear the Navara relies on temperature sensors for proper running, drivability and protection.

On a 2007 Navara, temperature sensors do a lot of quiet heavy lifting under the bonnet. The ECT sensor tells the ECU exactly how warm the engine is so it can sort cold-start enrichment, glow plug timing on diesels, idle speed, ignition and fuel trims. It also informs the cooling fans and the dash gauge, helping keep the ute in its happy temperature window across Aussie and Kiwi conditions. The IAT (built into the MAF on most D40s) tracks incoming air temp so fueling stays spot on as the weather swings from frosty mornings to summer scorchers. Automatics use an internal ATF temp sensor to protect the gearbox and manage shift feel, while the ambient sensor helps the A/C behave sensibly. Many diesel YD25s also reference fuel temperature to fine-tune injection. Most AU/NZ 2007 diesels weren’t fitted with a DPF, so exhaust gas temperature monitoring for DPF regen generally isn’t present on those utes.

There’s no scheduled replacement interval for these sensors, but they’re easy wins to check during servicing. A quick scan with a diagnostic tool to compare live coolant and intake temps against reality is a great start. Watch for hard cold starts, rough idle, thirsty fuel use, sootier exhaust, fans stuck on, an odd gauge, or harsh/late shifts on autos. Common fault codes include P0115–P0119 (ECT), P0125 and P0711 (ATF temperature).

Replacing a suspect ECT sensor is straightforward for a competent DIYer: let the engine cool, disconnect the battery, relieve a little coolant, unplug the connector, and swap the sensor using the correct deep socket and a new seal. Refill with the specified coolant mix and bleed air carefully. Avoid thread sealants unless the service manual specifies them, and always torque to factory spec. For IAT/MAF issues, use proper MAF cleaner (never touch the sensing wire). Ambient sensors live behind the front bumper and often fail from stone strikes or broken clips. Transmission temp sensors are usually inside the transmission, replacement involves dropping the pan and is best left to a transmission specialist. A quick look and scan every 10,000–15,000 km during routine servicing keeps these small but critical parts doing their job.

• Quick checks at service: scan temp PIDs, inspect connectors and wiring, verify fan operation, and ensure clean MAF/IAT.

Popular questions about 2007 Nissan Navara temperature sensors

Where is the coolant temperature sensor on a 2007 Navara?
On most YD25 diesel D40s it’s threaded into the coolant outlet/thermostat housing area at the front of the engine, accessible from the top with a deep socket. On VQ40 petrol models it’s near the water outlet by the intake side. Look for a two-pin connector on a brass-bodied sensor.

What are the signs a Navara temperature sensor is failing?
Think hard cold starts, high idle that won’t settle, heavy fuel use, rich running or black smoke on diesels, radiator fans running constantly, an iffy dash gauge, or erratic auto shifts. A scan tool showing implausible coolant or intake temps—like reading sub-zero on a warm day—is a dead giveaway.

Does a 2007 Navara have an EGT sensor for a DPF?
Most AU/NZ 2007 YD25 D40 utes weren’t factory-fitted with a DPF, so you typically won’t find EGT sensors dedicated to DPF regeneration. Some later or different-market variants did get DPF/EGT hardware. If unsure, check by VIN or look for DPF canisters and associated wiring on the exhaust.