what and here is this located ( 41 Primary oxygen sensor heater

[aznpnoyracer]

quick question for yall. Im trying to figure out a friends CEL code 41. the Primary oxygen sensor heater. which Im assuming is the o2 sensor. Ive researched about it and some people say that even though they replace the sensor, they still have the problem. how frequent is this? thanks Bruthas!

[JDMjunkie]

quick question for yall. Im trying to figure out a friends CEL code 41. the Primary oxygen sensor heater. which Im assuming is the o2 sensor. Ive researched about it and some people say that even though they replace the sensor, they still have the problem. how frequent is this? thanks Bruthas!

the primary oxygen sensor is in the o2 sensor. its most likely a bad sensor but it could be a bad connection, maybe even the main relay, if your talking about an accord i believe the o2 sensor is wired to it. find out the procedures to test it.

[blackcb7]

^^^ correct, i had this problem when i did my swap, but i had two wires hooked up wrong, like said above check the connection are good