Precision Coolant Temp Sensor (Ref: 22630JN00A) for Nissan

Restore accurate engine temperature readings with this OEM-grade coolant temp sensor. It feeds real-time data to the ECU for cold-start enrichment, idle control, ignition timing, and radiator fan logic. Expect stable idle, clean emissions, and better fuel economy when the sensor is healthy.

Why you need it

The ECU relies on coolant temperature to decide how much fuel to inject and when to trigger cooling fans. A precise signal prevents over-fueling on cold starts and protects the engine from overheating under load.

How it works ️

Inside is an NTC thermistor. As coolant warms, resistance drops. The ECU sends a 5V reference and reads the return voltage to calculate temperature. A sealed connector and O-ring ensure a dry, leak-free fit.

If it fails ⚠️

Expect hard cold starts, high idle, poor MPG, rich or lean mix, weak heater, or fans not engaging. Check Engine light with codes like P0115–P0119 may appear. Prolonged faults can foul plugs, damage the catalytic converter, or even risk head gasket issues.

Install tips ️

Located near the thermostat housing or cylinder head. Use a deep socket, replace the sealing ring, snug to spec, top up coolant, bleed air, and clear codes. Plug-and-play with OE connector and pinout.

Compatibility

• Qx50