O2 sensor location. Please help.

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Hey, can someone please help me locate my car's O2 sensor. I have a Nissan Navara D40 2010 Thai auto. I need to locate bank 1 senor 1 please. Thanks in advance.
 
Assuming a petrol engine! If you look just below the exhaust manifold -> catalytic converter join on the right hand bank of the V6 you'll find the sensor facing outwards.

Error codes concerning this sensor aren't always caused by this sensor. There might be an issue with the intake sensors giving bad data, or even just earth points (the manual says to check earth points first, and there are several).
 
Assuming a petrol engine! If you look just below the exhaust manifold -> catalytic converter join on the right hand bank of the V6 you'll find the sensor facing outwards.

Error codes concerning this sensor aren't always caused by this sensor. There might be an issue with the intake sensors giving bad data, or even just earth points (the manual says to check earth points first, and there are several).
Thanks for your reply. I've should have mentioned that it's a diesel engine and I've check below the exhaust manifold, around the cat with no luck. I did find a sensor behind the dpf, is that the same as an O2 sensor?
 
On my own car, I've got sensors front and rear of the DPF - these are both exhaust gas temperature sensors. There are also two metal tubes that connect to front and rear of the DPF - these tubes lead up to the left hand inner guard in the engine bay near the ABS unit) and connect via two rubber hoses to a black sensor mounted on the inside guard - these are pressure differential hoses, and the sensor is a pressure differential sensor.

My car does NOT have an extra sensor on the DPF.

However, 2011 models - which for Nissan means "some time around then" - there's an additional sensor on the rear of the DPF which is an air fuel ratio sensor. The AFR sensor should sit at the rear of the main body of the DPF, the temp sensor sits in the bend of the DPF outlet.
 
On my own car, I've got sensors front and rear of the DPF - these are both exhaust gas temperature sensors. There are also two metal tubes that connect to front and rear of the DPF - these tubes lead up to the left hand inner guard in the engine bay near the ABS unit) and connect via two rubber hoses to a black sensor mounted on the inside guard - these are pressure differential hoses, and the sensor is a pressure differential sensor.

My car does NOT have an extra sensor on the DPF.

However, 2011 models - which for Nissan means "some time around then" - there's an additional sensor on the rear of the DPF which is an air fuel ratio sensor. The AFR sensor should sit at the rear of the main body of the DPF, the temp sensor sits in the bend of the DPF outlet.
You have o2 sensors on your diesel D40 Tony?
 
You have o2 sensors on your diesel D40 Tony?

Not that I have found. Just the temp ones, but I've only looked at the DPF and part of the exhaust system heading up from it, there might be something in the CAT that I haven't been over (the manual does NOT show that there's anything there, though).
 
I found some on line for Spanish built D40's/R51's, which surprised me. I didn't think that YD25's would have them.

I couldn't find anything for Thai built D40 YD25's nor any for D22 YD25's.

Maybe the Spanish built ones were complying to stricter emissions regulations for the EU?
 
I thought that the Spanish ones would be more stringent on emission controls too, but there's also the possibility that they manufacture specifically for each market's requirements too.
 
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