109560 - Engine Coolant Temperature Sensor

Product Description

If you’ve noticed a check engine light on your Volvo and the ECM stores code 123 for the engine coolant sensor (ECT), here’s your answer! The ECT resides right underneath the thermostat on these vehicles which has been known to set a code for the ECT itself. The root cause is normally a thermostat that won’t fully close. The ECM looks for a 1 degree rise in temperature every 4 seconds as the vehicle goes through the warm up cycle. If this temperature increase is not seen code 123 is set. When the thermostat does not fully close, some coolant slips past it instead of warming up with the engine. This moving coolant does not stay still long enough to heat up in the specified amount of time and the threshold is breached, setting the code.

Replacing the thermostat solves the problem, although most repair facilities will recommend the ECT as well for good measure.

Technical Tips & Articles

• 10070 - Engine Coolant Sensor Check Engine Light

Product Status & Availability

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This stocked product is available to order plus backorders are allowed.

We consider this a stocked product and normally try to keep some in stock. If you need more than we have available, feel free to order it and we will get it for you. It typically takes 12 days for additional stock to arrive and be packed for shipping.