Name: Coolant Temperature Sensor Subaru Impreza WRX STI GD GE GH GJ GP EJ204 EJ255 EJ257 FB20
Brand: Aftermarket OEM Replacement
SKU: CCS90-Impreza
Price: 59.99 AUD
Availability: InStock

BRAND NEW Aftermarket OEM Replacement coolant temperature sensor to suit Subaru Impreza GD, GE/GH/GR, GJ and GP series including WRX and WRX STI variants.

Impreza misfiring when cold, running rich or showing a temperature fault code? On high-performance EJ255 and EJ257 engines the ECT sensor is especially critical - the ECU uses it for cold-start enrichment, boost management and ignition timing. This is a direct plug-and-play replacement with oval 2-pin connector and brown housing. Same-day dispatch from Cranbourne VIC.

TO SUIT

Suits Subaru Impreza GD9 i 2.0L EJ201 (1999-2007), GDF 2.5L EJ257 221kW WRX STI (2005-2007), GE7 i 2.0L EJ204 110kW (2008-2016), GEE/GVE WRX 2.5L EJ255 195kW (2008-2016), GGG WRX 2.5L EJ255 169kW (2005-2008), GH7 R 2.0L EJ204 110kW (2008-2012), GHE i WRX 2.5L EJ255 169kW (2007-2011), GJ7 2.0L FB20B 110kW (2011-2016), GP7 2.0L FB20 110kW (2012-2016), GRE WRX 2.5L EJ255 195kW (2010-2013), GRF WRX STi 2.5L EJ257 221kW (2008-2013), GVF WRX STi 2.5L EJ257 221kW (2011-2013).

FITMENT CHECK

This sensor has an oval 2-pin connector and a brown housing. If your sensor has a D-shaped connector and a black housing the correct part is CTS2035 (OEM 22630-AA230). Both part numbers appear in Impreza catalogues - check your existing sensor before ordering.

SPECIFICATIONS

Thread Size: M12 x 1.5
Spanner Size: 19mm
Connector: 2-pin oval
Housing Colour: Brown
Sensor Type: NTC (Negative Temperature Coefficient)
Mounting: Screw connection

OEM PART NUMBERS

22630-AA140
13650-73H00
13650-73H00-000
13650-M55K0-0
SU003-00420

OTHER PART NUMBERS

NTY: ECT-SU-000
VEMO: V24-72-0115
WALKER PRODUCTS: 211-1072
CTS-092
TCS141
CTS1107

PACKAGE INCLUDES

1 x Coolant Temperature Sensor - 2-pin oval connector - brown housing - M12x1.5 thread.

ABOUT THIS SENSOR

On turbocharged Subaru Impreza EJ255 and EJ257 engines the ECT sensor feeds temperature data to the ECU for fuel injection, ignition timing, boost control and cold-start enrichment simultaneously. A drifting sensor can cause the ECU to request less fuel enrichment during warm-up than the engine needs, leading to lean stumble and hesitation on cold mornings even before a fault code is set.

On naturally aspirated EJ201 and EJ204 variants the symptoms are milder but the same principle applies - incorrect temperature data disrupts the entire fuel and timing map.

COMMON SYMPTOMS OF FAILURE

Stumble or hesitation when cold especially under load
Rich running or increased fuel consumption
Rough idle that clears once fully warm
Temperature gauge not rising or reading incorrectly
Cooling fan faults - running at start or not activating
Check engine light - codes P0115 P0116 P0117 P0118 P0119

[09/99 - 12/07] SUBARU IMPREZA GD9 i 2.0L Flat4 EJ201 92kW
[01/08 - 11/16] SUBARU IMPREZA GE7 i 2.0L Flat4 EJ204 110kW
[01/08 - 03/12] SUBARU IMPREZA GH7 R 2.0L Flat4 EJ204 110kW
[09/08 - 11/16] SUBARU IMPREZA GEE/ GVE WRX 2.5L Flat4 EJ255 195kW
[09/05 - 12/08] SUBARU IMPREZA GGG WRX 2.5L Flat4 EJ255 169kW
[10/07 - 09/11] SUBARU IMPREZA GHE i WRX 2.5L Flat4 EJ255 169kW
[07/10 - 08/13] SUBARU IMPREZA GRE WRX 2.5L Flat4 EJ255 195kW
[10/05 - 04/07] SUBARU IMPREZA GDF 2.5L Flat4 EJ257 221kW
[01/08 - 08/13] SUBARU IMPREZA GRF WRX STi 2.5L Flat4 EJ257 221kW
[01/11 - 12/13] SUBARU IMPREZA GVF WRX STi 2.5L Flat4 EJ257 221kW
[01/12 - 11/16] SUBARU IMPREZA GP7 2.0L Flat4 FB20 Euro 5 110kW
[07/11 - 11/16] SUBARU IMPREZA GJ7 2.0L Flat4 FB20B Euro 5 110kW

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	CCS90-Impreza
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CCS90
Reference OEM Number	13650-73H00, SU003-00420
Other OEM Numbers	22630-AA140, 13650-73H00, SU003-00420, 1802332
Related Part Numbers	CTS-092, TCS141, CTS1107
Trade Part Numbers	NTY: ECT-SU-000, VEMO: V24-72-0115, WALKER: 211-1072
Product Specifics
Product Type	SENSOR
Sensor Type	ENGINE COOLANT TEMPERATURE SENSOR
Thread Size	M12x1.5 mm
Spanner Size	19 mm
Number of pins	2 -pin connector
Connector Shape	oval
Housing Colour	brown
Other Details
Note	Always verify fitment using your vehicle's OEM part number.