Nissan Repair: Infinity qx4 P0138 code, infinity qx4, oxygen sensor

Question
Got a P0138 code and not sure what to do about it.  Do you have any idea?
Thanks,
Tom

Answer
Hi Tom -]

Looks like you have an Oxygen sensor code (high voltage). Does not look like anything serious, or it may just be a nuisance code.

Try resetting it by either removing the ECM fuse, or disconnecting the battery for a few seconds. If the code returns, you may want to replace the sensor, however, there is a chance it may correct itself later.

Hope this helps -'
aloha
calvin