: O2 sensor Question

11-18-04, 12:54 PM
Does anyone know if coolant leaking internally will cause a O2 sensor to give a "Lazy O2 Sensor - Bank 1 Sensor #2" message". I am using a Snap-On scanner. Thanks

11-18-04, 02:57 PM
Sure will...do you know you have coolant leaking internally, or are you wondering if that could cause an 02 sensor failure? They can fail all by themselves, with no coolant leaking.

11-18-04, 03:16 PM
I have every indication that my coolant is leaking internally. To save money I am purchasing the parts needed (instead of the mechanic) to have the block timeserted. I will be adding this to my list as the "Service Emissions System" code comes up from time to time with the code related to the lazy O2 sensor. Thanks.