Clear Fluid Leak from Under Nissan Altima (AC Off)
Clear water leaking from under the vehicle when the AC is off could indicate condensation from the AC evaporator drain (if residual moisture is present) or, more concerning, coolant leakage from the cooling system. Since the AC was not running, coolant is the primary suspect, which can lead to engine overheating if not addressed.
Diagnosis Details
Possible Causes
Coolant leak from radiator, hoses, water pump, or reservoir
Residual AC condensation drain (if AC was used recently)
Windshield washer fluid leak (if fluid is clear and not dyed)
Related OBD-II Codes
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What You Should Do
Check coolant level in the reservoir and radiator (when cold).
Inspect under the hood for visible leaks around hoses, radiator, water pump, and expansion tank.
If coolant is low or leaking, do not drive until repaired to avoid overheating.
If coolant is full and no leak is found, monitor the fluid location and color; clear water may still be AC condensation if the system was used recently.
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.
