NO. 18 Cooling System Concerns-runs Cold: Notes

WARNING: This page is about a different car, the 2018 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

NO. 18 COOLING SYSTEM CONCERNS-RUNS COLD (SKYACTIV-G 2.5 - WITH CYLINDER DEACTIVATION) DESCRIPTION AND POSSIBLE CAUSE

18	COOLING SYSTEM CONCERNS-RUNS COLD
DESCRIPTION	Engine does not reach normal operating temperature.
POSSIBLE CAUSE	Improper indication of low engine coolant temperature indicator light and/or high engine coolant temperature warning light ECT sensor malfunction Instrument cluster malfunction Cooling fan system malfunction Condenser fan system malfunction Coolant control valve malfunction Foreign matter penetration in engine coolant

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.