What is the role of the Engine Coolant Temperature (ECT) sensor in my Toyota Prius?

The Coolant Temperature Sensor serves dual purposes. It plays an important role in engine management by giving information to the Powertrain Control Module (PCM) in regard to the coolant temperature. This data helps the PCM make important decisions related to fuel delivery, ignition timing, and other engine responsibilities. The second role includes detecting the engine's coolant temperature and allowing for precise readings reflected on the vehicle's instrument panel.

Genuine Toyota Prius Coolant Temperature Sensor

Coolant Water Temperature Sensor

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4 Coolant Temperature Sensors found

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Toyota Prius Sensor, Water Temperature
Part Number: 89422-35010
- Other Name: Sensor, Water Temperature (For E.F.I.)
- Comment: (FOR E.F.I.)
$57.58 MSRP: $80.49
You Save: $22.91 (29%)

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Fits the following Vehicles:
2001-2003 Toyota Prius | 4 Cyl 1.5L | 1NZFXE; 1NZFXE; NHW11L-AEEEBA, NHW11L-AEEEBK
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Toyota Prius Sensor, Water Temperature
Part Number: 89422-33030
- Other Name: Sensor, Water Temperature (For E.F.I.); Coolant Temperature Sensor, Temperature Sensor
- Comment: (FOR E.F.I.)
$57.58 MSRP: $80.49
You Save: $22.91 (29%)

Add to Cart
More Info
Fits the following Vehicles:
2004-2022 Toyota Prius | E, G, L, S | 4 Cyl 1.5L, 4 Cyl 1.8L | 1NZFXE, 2ZRFXE; 1NZFXE, 2ZRFXE; NHW20L-AHEEBA, NHW20L-AHEEBK, ZVW30L-AHXBBA, ZVW30L-AHXEBA, ZVW30L-AHXEBK, ZVW30L-AHXGBA, ZVW35L-BHXBBA, ZVW35L-BHXEBA, ZVW35L-BHXEBK, ZVW35L-BHXGBA, ZVW50L-AHXEBA, ZVW51L-AHXBBA, ZVW51L-AHXEBA, ZVW51L-AHXGBA, ZVW51L-AHXHBA, ZVW55L-AHXEBA, ZVW55L-AHXGBA
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Toyota Prius Sensor, Temperature
Part Number: 89429-47010
- Other Name: Sensor, Water Temperature
- Manufacturer Note: MEXICO SPEC
$58.06 MSRP: $81.14
You Save: $23.08 (29%)

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Fits the following Vehicles:
2004-2022 Toyota Prius | E, G, L, S | 4 Cyl 1.5L, 4 Cyl 1.8L | 1NZFXE, 2ZRFXE; 1NZFXE, 2ZRFXE; NHW20L-AHEEBA, NHW20L-AHEEBK, ZVW30L-AHXBBA, ZVW30L-AHXEBA, ZVW30L-AHXEBK, ZVW30L-AHXGBA, ZVW35L-BHXBBA, ZVW35L-BHXEBA, ZVW35L-BHXEBK, ZVW35L-BHXGBA, ZVW50L-AHXEBA, ZVW51L-AHXBBA, ZVW51L-AHXEBA, ZVW51L-AHXGBA, ZVW51L-AHXHBA, ZVW55L-AHXEBA, ZVW55L-AHXGBA
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Toyota Prius Sensor, Water Temper
Part Number: 89422-47010
- Other Name: Sensor, Water Temperature (For E.F.I.); Coolant Temperature Sensor, Temperature Sensor
$57.82 MSRP: $80.82
You Save: $23.00 (29%)

Add to Cart
More Info
Fits the following Vehicles:
2016-2022 Toyota Prius | 4 Cyl 1.8L | 2ZRFXE; 2ZRFXE; ZVW50L-AHXEBA, ZVW51L-AHXBBA, ZVW51L-AHXEBA, ZVW51L-AHXGBA, ZVW51L-AHXHBA, ZVW55L-AHXEBA, ZVW55L-AHXGBA
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Toyota Prius Coolant Temperature Sensor Parts Questions & Answers

Sensor, Temperature
89429-47010
Q: What is the role of the Engine Coolant Temperature (ECT) sensor in my Toyota Prius?
A: The Coolant Temperature Sensor serves dual purposes. It plays an important role in engine management by giving information to the Powertrain Control Module (PCM) in regard to the coolant temperature. This data helps the PCM make important decisions related to fuel delivery, ignition timing, and other engine responsibilities. The second role includes detecting the engine's coolant temperature and allowing for precise readings reflected on the vehicle's instrument panel.