O2 Sensor Head Gasket

So before replacing any of these sensors you must first find the real problem that pushed you in that direction.

O2 sensor head gasket.

The missfire is caused by ignition sys leak or compression problem the o2 sensor only reports the amount of o2 in the exhaust if it is fouled it can cause the engine to go ritch or lean and affect a lean or rich missfire so if you have a check engine light find out. If its a coolant type leak. More than likely the fuel lines were removed or replaced which triggered the o2 sensor to go off. I hope they u changed the plugs but the blown head gasket will cause damage to the o2 sen and the cat.

I have also been getting oxygen sensor codes being thrown every month or so the check engine light typically goes away. Oxygen sensor o2 what else could cause rich or lean codes replacement of a good oxygen sensor o2 is a common mistake made by diy mechanics all the time. I m worried that i have a blown head gasket that is leaking slowly out of that corner of the head. Oxygen sensor is just that it detects oxygen in the engine.

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