Parts for your 2013 Nissan Pathfinder-Temperature sensors

2013 Nissan Pathfinder Temperature Sensors

Based on Nissan’s 2013 Pathfinder (R52) Electronic Service Manual (ESM) — notably the EC (Engine Control), AT (CVT), and HAC (Heater & Air Conditioning) sections — as well as the Nissan Genuine Parts catalogue, temperature sensors are absolutely fitted to and used by the 2013 Nissan Pathfinder. The documents specify an engine coolant temperature (ECT) sensor, an intake air temperature (IAT) sensor integrated in the MAF, a CVT fluid temperature sensor within the transmission, and HVAC-related sensors such as the ambient and evaporator temperature sensors. So, “temperature-sensors” are very much relevant on this vehicle.

On the 2013 Pathfinder, temperature sensors do a heap of behind-the-scenes work to keep things running sweet. The ECT sensor helps the ECU manage cold starts, fuelling, ignition timing, idle speed, radiator fan operation, and overheat protection. The IAT (inside the MAF) fine-tunes fuel trims and spark based on the air’s density. The CVT fluid temperature sensor lets the transmission control module protect the gearbox, adjust shift strategy and ratio control, and trigger fail-safe if it gets too hot. For comfort, the ambient and evaporator sensors inform the climate control so it can avoid evaporator icing and deliver the right cabin temperature and outside temp display.

They’re not usually a periodic “replace at X km” item, but they do benefit from sensible servicing:

• Cooling system care: fresh coolant at the specified interval helps the ECT sensor live a long life. Only remove the sensor on a cold engine, relieve pressure, catch and top up with the correct Nissan long-life coolant, and bleed air properly.
• Air intake care: keep the air filter clean and, if needed, gently clean the MAF/IAT with MAF-safe cleaner (no touching the element). Avoid oiled filters that can contaminate the sensor.
• CVT checks: correct CVT fluid level is set with the fluid at a defined temperature range. A scan tool (CONSULT-III plus or equivalent) is used to read CVT fluid temp during level checks.
• HVAC sensors: if the outside temp reads oddly, or the A/C cycles or ices up, inspect the ambient sensor (often in front of the condenser) and the evaporator sensor inside the HVAC box.

Typical fault signs include hard cold starts, high idle, poor fuel economy, radiator fans running constantly, odd gauge behaviour, A/C that won’t hold temp, or the check engine light with codes like P0117/P0118 (ECT), P0073 (ambient), or P0711 (CVT fluid temp). Diagnosis with live data is best practice. When replacing, use quality parts, confirm connector integrity, and tighten to the service manual spec.

Popular questions about 2013 Nissan Pathfinder temperature sensors

Where is the engine coolant temperature sensor located?
On the VQ35DE in the R52 Pathfinder, the ECT sensor sits on the coolant outlet housing near the thermostat area at the front of the engine (by the front cylinder bank), beneath the intake ducting. Access often requires removing the intake snorkel and some plastic covers for a clear line to the sensor and connector.

Can a dodgy temperature sensor cause CVT issues?
Yes, but with nuance. The engine’s ECT faults can affect drivability and load signals, which the CVT also references. However, the CVT mainly relies on its own fluid temperature sensor, if CVT fluid temp reads excessively high or the sensor fails, the transmission can enter fail-safe (limp) and log codes like P0711. Always scan both engine and transmission modules.

Do these sensors need regular replacement?
Not typically. They’re replaced on condition. During routine services, technicians should inspect wiring, connectors, and live data. Keep coolant fresh, air filtration clean, and avoid contamination on the MAF/IAT. Replace a sensor if readings are implausible, faults return after wiring checks, or the part fails basic resistance/voltage tests per the ESM.