BRAND NEW *OEM Quality* engine coolant temperature sensor to suit Subaru Impreza WRX and STI with EJ205, EJ207, EJ255 and EJ257 engines.

A failing coolant sensor on a turbo EJ usually shows up as a hot restart that stumbles, or thermo fans that will not cut in while you sit in traffic. A new sensor restores correct fuelling and fan control. Dispatched same-day from Cranbourne VIC before 12pm.

TO SUIT

Fits the Subaru Impreza WRX and WRX STI across the GC, GD and GG chassis, including GDA, GDB, GDF, GGA and GGG builds. Covers the turbocharged EJ205, EJ207, EJ255 and EJ257 as well as the naturally aspirated EJ201 and EJ204. Also fits the WRX GJ from 2014.

FITMENT CHECK

This is the 3-pin triangular plug with an M12 x 1.5 thread and a 19 mm spanner flat. Subaru fitted more than one coolant sensor across this era, so match the plug shape and thread to your original before ordering.

OEM PART NUMBERS

22630-AA100
22630-AA11A
22630-AA160
22630-AA161
2263044100

OTHER PART NUMBERS

VEMO: V70-72-0120-1
WALKER: 211-1117
MTE-Thomson: 4255
Goss: CS844
TCS125
CTS-030
TX85

PACKAGE INCLUDES

1 x engine coolant temperature sensor with 3-pin triangular plug and seal ring.

ABOUT THIS SENSOR

On the turbocharged EJ the ECU leans heavily on coolant temperature to set fuelling and ignition timing under boost. The sensor sits in the coolant crossover at the front of the block and lives through constant heat cycling, which is what eventually pushes its resistance curve out of specification.

A drifting sensor rarely fails outright. It more often reads cold, so the ECU holds a rich warm-up map long after the engine is hot, washing fuel past the rings and fouling plugs on a car that otherwise runs well.

COMMON SYMPTOMS OF FAILURE

Fault codes P0115, P0117, P0118 or P0125 stored
Hard hot starting or a stumble on restart after a short stop
Thermo fans not cutting in and temperature climbing in traffic
Rich running, black smoke on start and heavy fuel use
Temperature gauge reading low or sitting at cold
Cooling fans running constantly from a cold start

[1992 - 1998] SUBARU IMPREZA GC,GC8 (2.0L 4cyl EJ20/EJ20G 155kW)
[1994 - 1998] SUBARU IMPREZA GF,GF8 (2.0L 4cyl EJ20/EJ20G 155kW)
[1996 - 1998] SUBARU IMPREZA GF,GF8 (2.0L 4cyl EJ201 85kW)
[1997 - 2000] SUBARU IMPREZA GF,GF3 (1.6L 4cyl EJ161 70kW)
[1998 - 2000] SUBARU IMPREZA GC (2.0L 4cyl EJ201 92kW)
[1998 - 2000] SUBARU IMPREZA GC,GC8 (2.0L 4cyl EJ205 160kW)
[1998 - 2000] SUBARU IMPREZA GF (2.0L 4cyl EJ201 92kW)
[1998 - 2000] SUBARU IMPREZA GF,GF8 (2.0L 4cyl EJ205 160kW)
[1998 - 2000] SUBARU IMPREZA GFC (2.0L 4cyl EJ207 206kW)
[1999 - 2000] SUBARU IMPREZA GC,GC8 (2.0L 4cyl EJ201 92kW)
[1999 - 2000] SUBARU IMPREZA GC,GC8 (2.0L 4cyl EJ207 206kW)
[1999 - 2007] SUBARU IMPREZA GD,GD9 (2.0L 4cyl EJ201 92kW)
[2000 - 2002] SUBARU IMPREZA GD,GDA (2.0L 4cyl EJ205 160kW)
[2000 - 2005] SUBARU IMPREZA GG,GGA (2.0L 4cyl EJ205 160kW)
[2000 - 2007] SUBARU IMPREZA GG (2.0L 4cyl EJ201 92kW)
[2001 - 2002] SUBARU IMPREZA GD (2.0L 4cyl EJ205 150kW)
[2001 - 2005] SUBARU IMPREZA GD,GDB (2.0L 4cyl EJ207 195kW)
[2001 - 2005] SUBARU IMPREZA GD,GDE (2.5L 4cyl EJ251 112kW)
[2002 - 2003] SUBARU IMPREZA GD (2.0L 4cyl EJ205 165kW)
[2002 - 2003] SUBARU IMPREZA GG (2.0L 4cyl EJ205 165kW)
[2002 - 2005] SUBARU IMPREZA GD,GDA (2.0L 4cyl EJ205 168kW)
[2002 - 2005] SUBARU IMPREZA GDA,GGA (2.5L 4cyl EJ25 112kW)
[2005 - 2006] SUBARU IMPREZA GG (2.0L 4cyl EJ205 169kW)
[2005 - 2007] SUBARU IMPREZA GD (2.5L 4cyl EJ257 195kW)
[2005 - 2007] SUBARU IMPREZA GD (2.5L 4cyl EJ257 221kW)
[2005 - 2007] SUBARU IMPREZA GD,GDF (2.5L 4cyl EJ257 206kW)
[2005 - 2007] SUBARU IMPREZA GD,GDG (2.5L 4cyl EJ255 169kW)
[2005 - 2008] SUBARU IMPREZA GG (2.5L 4cyl EJ257 221kW)
[2005 - 2008] SUBARU IMPREZA GG,GGG (2.5L 4cyl EJ255 169kW)
[2007 - 2011] SUBARU IMPREZA GE,GH,GHE,GR (2.5L 4cyl EJ255 169kW)
[2008 - 2012] SUBARU IMPREZA GE,GH,GH7,GR (2.0L 4cyl EJ204 110kW)
[2008 - 2013] SUBARU IMPREZA GE,GH,GR,GRF (2.5L 4cyl EJ257 221kW)
[2008 - 2016] SUBARU IMPREZA GE7,GR (2.0L 4cyl EJ204 110kW)
[2008 - 2016] SUBARU IMPREZA GR,GVE (2.5L 4cyl EJ255 195kW)
[2010 - 2013] SUBARU IMPREZA G3,GE,GH,GR (2.5L 4cyl EJ255 195kW)
[2011 - 2013] SUBARU IMPREZA GR,GVF (2.5L 4cyl EJ257 221kW)
[2014 - 2024] SUBARU WRX FKH(V1),GJ (2.5L 4cyl EJ257 221kW)

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	CCS93
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CCS93
Reference OEM Number	22630AA100
Other OEM Numbers	22630-AA100, 22630-AA11A, 22630-AA160, 22630-AA161, 2263044100
Related Part Numbers	CTS-030, TCS125, CS844, TX85
Trade Part Numbers	VEMO: V70-72-0120-1, WALKER: 211-1117, MTE-Thomson: 4255
Product Specifics
Product Type	SENSOR
Sensor Type	Coolant Temperature Sensor
Manufacturer Warranty	1 Year
Thread Size	M12x1.5
Spanner Size	19mm
Number of pins	3-Pin
Connector Shape	triangular
Supplementary Article Info	with seal ring
Housing Colour	Grey
Mounting Type	Threaded
Compatible Makes	Subaru
Fitment Type	Direct Replacement
Other Details
Note	3-pin triangular plug, M12x1.5 thread, 19mm spanner
Unit Of Measure	ea