P0140 O2 Sensor - Best Place to Buy / PN.

[martyp87]

Hi all,

When driving the truck, I've noticed the engine sometimes doesn't want to rev beyond 2k/rpm. To be honest, not sure how long it's been a potential issue as I usually don't drive it hard although, the EML is now on. Fault code is coming up as P0140 / P0141 O2 sensor bank 1, sensor 2 (so rear).

Only happens sometimes although, when it happens it won't come out of it even kickdown etc.

Looking to purchase the sensor, is there anywhere online that is recommended or shall I just call the dealership.

Thank you in advance.

 

[Old.Tony]

Some more information about the vehicle would help - year model, engine type and cylinders too.

Sometimes these errors aren't actually caused by the component indicated by the error, too. Poor electrical connections can cause odd-seeming errors, older vehicles are prone to this, but newer vehicles can suffer from this if the engine is pressure washed.