Symbol 3327 from ISO 7000 - Title/Meaning: Engine system temperature Function/description: To indicate that the temperature of one or more engine system functions (for example: oil, coolant, intake air, exhaust gas) is outside normal operating parameters.
pay attention to orientation of symbolAdditional information: 
Use this symbol only when the monitored function is not specified
For engine oil temperature, use ISO 7000-1375. For engine coolant temperature, use ISO 7000-1380. For engine intake air temperature, use ISO 7000-1383. For engine exhaust gas temperature, use ISO 7000-1388.
Own work using: iso.org/obp/graphics/grs/469230f0-a988-498b-955f-10bf3feecb65 200.png
Vectorization:  Mrmw