Search result for: 37870RWCA01
SENSOR ASSY,TW
Part number: 37870RWCA01
Availability: 19
Weight, kg: 0.025
Processing: 2-3 days
Make: Honda
Made in: Japan

Substitutions
COOLANT TEMPERATURE SENSOR ACCORD [08-12]
Part number: HDS8800457
Availability: 144
Weight, kg: 0.025
Processing: 7-10 days
Make: SCHNIEDER
Made in: Germany

Engine Coolant Temperature Sensor for Honda vehicles οΈ
This OEM-grade ECT sensor tells the engine computer the exact coolant temperature. With that data, the ECU adjusts fuel mix, ignition timing, idle speed, and fans. You get smooth cold starts, strong drivability, clean emissions, and protected cooling system. Ideal for restoring factory behavior after age, corrosion, or erratic readings.
Why this part is needed
Modern injection systems rely on precise temperature input. A fresh sensor keeps warm-up enrichment correct, prevents over-fueling, and helps the radiator fan switch on at the right moment. It also supports accurate A/C and transmission strategies.
How it works
Inside is an NTC thermistor in the coolant stream. As temperature rises, resistance falls. The ECU reads the voltage and maps it to actual Β°C, then controls mixture, timing, and fan relays accordingly. The sealed body and correct thread ensure leak-free fit.
If the sensor is faulty β οΈ
- Hard cold starts or stalling
- High idle, poor MPG, black smoke
- Fan not engaging or stuck on
- Overheating risk, CEL (P0115βP0119)
- Rich/lean running and rough shifts
Replace promptly to avoid catalyst damage and overheating.
Install tips
Work on a cool engine. Unplug connector, catch a little coolant, unscrew sensor, fit new sealing washer, torque gently, reconnect, top up and bleed air. Clear fault codes and verify fan operation.
Compatibility
- Fr-V
- Civic
- Cr-V I-Ctdi
- Cr-V I-Dtec
- Cr-Z
- Accord
- Jazz
- Jazz Hybrid
- Accord Tourer
- City
- Insight
- Cr-V
- Fit
- Acty Van
- Vamos Hobio
- Freed Spike
- Odyssey
- Freed Hybrid
- Freed Spike Hyb
- Zest Sports
- Zest Spark
- Crossroad
- Freed
- Life
- Step Wgn
- Step Wgn Spada
- Accord Hybrid
- N One
- Fit Hybrid
- N-Wgn Custom
- Vezel
- Vezel Hybrid
- Fit Shuttle
- Fit Shuttle Hyb
- Accord 4D
- Insight Exclusi
- Acty Truck
- N Box Custom
- N-Box Custom
- N Box+ Custom
- N-Box+ Custom
- Brio Amaze
- Mobilio
- Brio
- Jade
- Amaze
- Honda Hr-V
- Honda Mobilio
- Accord Euro Tou
- Civic Hybrid
- Br-V
- Legend
