2002 NISSAN XTERRA P0138 Secondary HO2S Circuit High Voltage

donhohman · **Joined:** Sun Nov 23, 2008 11:39 pm **Posts:** 1

Hi - I am getting this service engine soon error code P0138 for my Nissan Xterra. For "bank 1 sensor 2" - anyone can give me any idea what this means? I had a new torque converter installed recently - could it have anything to do with it?

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

Mohawkmtrs · **Posted:** Mon Nov 24, 2008 9:50 am

It means there's a problem with either your post-cat O2 sensor, circuit or connection.

It's possible that the sensor/circuit was disturbed during the tranny R&R.

I'd take it back to the shop that did the tranny work.

Good luck and keep us posted.

2002 NISSAN XTERRA P0138 Secondary HO2S Circuit High Voltage

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