O2 Sensor Head Gasket

More than likely the fuel lines were removed or replaced which triggered the o2 sensor to go off.

O2 sensor head gasket.

I have also been getting oxygen sensor codes being thrown every month or so the check engine light typically goes away. If there s a head gasket leak then yes it could. Online shopping from a great selection at automotive store. 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.

I m worried that i have a blown head gasket that is leaking slowly out of that corner of the head. I hope they u changed the plugs but the blown head gasket will cause damage to the o2 sen and the cat. So before replacing any of these sensors you must first find the real problem that pushed you in that direction. 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.

If its a coolant type leak.