BRAND NEW *OEM Quality* coolant temperature sensor to suit Honda City GM2 GM6 1.5L L15 sedans.

A tired coolant sensor on the City shows up as rough idle, poor fuel economy or an erratic temp gauge - this direct-fit replacement restores accurate readings without any wiring changes. Dispatched same-day from Cranbourne VIC.

TO SUIT

Suits the Honda City GM2 1.5L i-VTEC sedan (2009-2014) and the GM6 1.5L i-VTEC sedan (2014-2020).

FITMENT CHECK

Early GM2 models built before 12/2010 use two separate sensor locations - one in the lower radiator tank and one in the thermostat housing. Confirm which position your vehicle needs before ordering.

OEM PART NUMBERS

37870-RTA-005
37870-RWC-A01
37870-RZA-007

OTHER PART NUMBERS

64-04-403
TS10288
700101
211-1080

PACKAGE INCLUDES

1 x Coolant Temperature Sensor with 2-pin oval connector, M10 x 1.25mm thread - direct plug-and-play fitment, no wiring modification required.

ABOUT THIS SENSOR

The City's compact 1.5L L15-A7 engine relies on this sensor for cold-start fuel enrichment and VTEC engagement timing - a drifting signal causes rough idle and higher fuel consumption until it warms up.

Because early GM2 models split the sensing function across two locations, it's worth confirming the port position against your vehicle before fitting.

COMMON SYMPTOMS OF FAILURE

Rough idle or hard starting when cold
Poor fuel economy or excessive fuel consumption
Black smoke from the exhaust (engine running rich)
Engine overheating or cooling fan running constantly
Check Engine Light with fault code P0116, P0117 or P0118
Incorrect or fluctuating temperature gauge reading

[2009 - 2014] HONDA CITY GM2 SEDAN 1.5L i-VTEC L15-A7 4cyl 88kW
[2014 - 2020] HONDA CITY GM6 SEDAN 1.5L i-VTEC L15-A7,L15Z1 4cyl 88kW
[2009 - 2018] HONDA INSIGHT ZE HATCHBACK 1.3L HYBRID LDA3 4cyl 65kW
[2020 - 2025] HONDA INSIGHT ZE HATCHBACK 1.3L HYBRID LDA3 4cyl 65kW
[2009 - 2013] HONDA ODYSSEY RB3 MPV 2.4L K24Z2 4cyl 132kW
[2013 - 2023] HONDA ODYSSEY RC1,RC2,RC4 MPV 2.4L i-VTEC K24W7 4cyl 129kW

How do I test a coolant temperature sensor?

The most common test is to measure the sensor resistance with a multimeter at a known coolant temperature and compare against the manufacturer resistance curve. A cold engine (20 degrees C) typically reads 2,000 to 3,000 ohms and drops to around 200 to 300 ohms at operating temperature (90 degrees C). An OBD2 scanner showing a fixed temperature reading that does not change as the engine warms up is also a strong indicator of sensor failure.

Can a faulty coolant temperature sensor cause my engine to overheat?

Indirectly yes. If the sensor reports a lower temperature than actual, the ECU may not activate the cooling fan at the correct time, allowing the engine to overheat. It can also suppress the dashboard warning light, meaning you may not be alerted until the engine is already at a dangerously high temperature. Replace a suspected faulty sensor promptly.

Do I need to drain the coolant to replace the sensor?

Not always - many coolant temperature sensors can be replaced quickly with minimal coolant loss if you work fast and have a replacement ready to thread in immediately. However on some vehicles the sensor location requires partial coolant drainage. Check the sensor position on your specific engine before starting. Always use fresh coolant when topping up after replacement.

What are the symptoms of a faulty coolant temperature sensor?

Symptoms include poor fuel economy, black smoke, engine overheating warning, incorrect temperature gauge reading, hard starting when cold, and rough idle. Fault codes P0115 to P0119 are commonly associated with coolant temperature sensor faults.

Is it safe to drive with a bad coolant temperature sensor?

A faulty coolant temperature sensor can cause the ECU to run rich fuel mixtures and prevent the cooling fan from operating correctly, risking engine overheating. Replace it promptly - it is a low-cost part that can prevent expensive engine damage.

How do I know if my coolant temperature sensor or my thermostat is faulty?

A faulty thermostat typically causes the engine to overheat or never reach operating temperature. A faulty coolant temp sensor causes incorrect gauge readings and running issues but the coolant itself may be at the correct temperature. An OBD2 scanner showing live coolant temp data helps distinguish between the two.

Are there two coolant temperature sensors on my vehicle?

Many vehicles have two sensors - one for the ECU (engine management) and one for the dashboard temperature gauge. They look similar but are not interchangeable. Check your vehicle's service manual or contact us with your vehicle details to confirm which sensor you need.

Identification
SKU	CCS72-5
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CCS72
Reference OEM Number	37870-RTA-005
Other OEM Numbers	37870-RTA-005, 37870-RWC-A01, 37870-RZA-007
Related Part Numbers	CS859, TS10288, TX215
Trade Part Numbers	V26-72-0009, 6PT 009 309-601, ECT-HD-004
Product Specifics
Product Type	SENSOR
Sensor Type	Coolant Temperature Sensor
Thread Size	M10x1.25mm
Spanner Size	17mm
Number of pins	2-Pin
Connector Shape	oval
Housing Colour	White
Compatible Makes	Honda
Fitment Type	Direct Replacement
Other Details
Note	City GM2 pre-12/2010: 2 sensor locations - tank & thermostat
Unit Of Measure	ea