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Will Engine Light Come On If Coolant Is Low? [Solved]

If the level falls below a critical amount of coolant in the radiator or expansion tank (attached to the radiator via a hose or pipe), the sensor sends a signal to the vehicle’s onboard monitoring system which then turns on the low coolant warning light on the instrument panel in order to alert you of the issue.

Can Low Coolant Cause Check Engine Light?

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Most Common Reasons Your Check Engine Light Is On

In this video you

Cel check engine light 111 / 1 coolant level low. Coolant circuit failed low 2016 freightliner

For your cascadias 2018 and below you may be getting this code