The manual recommends replacing them after 90,000 km. I'm up to 98890 now and the check engine has been on for a few days. Got a loan of a good reader from friend and it tells me the O2's are the issue. Fuel rates gone from 9L/100km to 10.5. I've been looking online for replacements but confused about whether the same sensor fits both the 2.2 and 2.4l engines. Mine is a LT 2.4L and the sensors I find online are saying they fit both engine styles. Also if someone has a good spot to check I'd appreciate it.

 

I beleve they are the same. What was the code number that you have. An 02 sensor code don't always mean that the 02 sensor is bad. Also understand that there are more than just one 02 sensors on your car.

 

First, just because the "code" is titled HO2 sensor does not mean that's what is wrong.

Second, replacing expensive items on an arbitrary schedule is not good economics, since we are not talking aircraft, network or other life and death parts.

I would make sure that the exhaust "flex pipe" has not broken. That gives an HO2 error because there is a difference between the upper sensor and the lower sensor because there is a leak.

The actual code you got would be more helpful. Generally speaking a "HO2 sensor code" is a generic thing that only means that there is something wrong with in the exhaust gas system, not necessarily the sensors.

You need to get the code, then get a service manual , then go to the diagnostic tree and branch that the code references, then do the tests. At least that"s the "Book" answer.

 

Dam, I hate it when that happens. When I'm typing a long winded answer someone else types the same thing in one sentence.

 

sorry, if it helps I liked your answer

 

Which manual would that be? I have the owners manual as well as the factory service manual and I can't find that recommendation in either of them. If it turns out to be one of the HO2 sensors, if buying online, I would only replace it with OEM sensor(s).