Skip the auto shop - Our mechanics make house calls

Q: antifeeze to come out of the O2 sensor

asked by on

I'm getting heat in my car but it's not getting hot. It looks like antifreeze is coming out of the oxygen sensor. My oil looks good. No antifreeze is coming out of my tailpipe. What is the problem and what can I do to fix it

My car has 123 miles.
My car has a manual transmission.

Hello, thank you for writing in. When coolant leaks into the engine from a blown head gasket, cracked head, crank case, intake manifold, or simply dripping down the engine. If there is actual coolant dripping from the O2 sensor, and none coming from the tail pipe, then you can assume your catalytic converter is likely going to fail soon. It is absorbing the extra coolant and is going to fail soon. This can be a serious issue, and you need to make sure if the vehicle must be driven that it has coolant or water in the cooling system. In winter months, do not keep water in the engine. You must find the source of the coolant leak.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Warning lights 1998 Saturn SW1

You should make sure you are not low on coolant and the engine is not overheating. If you are, then do not drive the vehicle until it is diagnosed or severe engine damage may happen. The battery light may have...

Q: Input shaft swap between automatic and manual transmission possible?

Hello there, the input shaft is different between the automatic and manual transmissions of your 1993 Chevrolet Blazer. The part numbers are different between the two parts, this indicates the input shaft is not able to be swapped between the...

Q: 2011 Chevy Aveo has no spark at cylinders 2 and 3

The coils on your vehicle are all housed together in a carrier assembly. If two of the four coils aren't producing spark, there's a good chance the carrier is to blame. A professional, such as one from YourMechanic, can repair...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.