Coolant Leak Diagnosis
Green, orange, or pink fluid leaking under the car, especially when the engine runs hot, indicates a coolant leak. This is a serious issue that can lead to engine overheating and damage if not addressed promptly.
Diagnosis Details
Possible Causes
Damaged or degraded radiator hoses, causing coolant to leak at connections or cracks.
Faulty water pump with a leaking seal or bearing.
Cracked radiator or expansion tank, often due to age or overheating.
Leaking heater core or heater hose connections.
Related OBD-II Codes
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What You Should Do
Do not drive the car if it is overheating.
Check coolant level when engine is cool, inspect hoses and radiator for visible leaks, and have a professional pressure test the cooling system to locate the exact source.
Replace any damaged components and refill with the correct coolant type.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.

