Lambda Sensor /O2 Sensor fault code.

[reallymental@g]

Hi everyone, I hope you can help with this one.

I recently plugged in my OBD and the following fault code came back. P2A00 - O2 Sensor circuit range/Performance bank 1 sensor 1.

Has anyone had any experience with this fault before and could anyone direct me to which lambda sensor is the problem and where to locate it?

Many thanks

 

[reallymental@g]

The problem is on a Citroen Relay 2017 model

 

[Googlebot]

Not sure if it’s anything like the Ducato, it’s fairly easy to get out. Sensor is just behind the exhaust manifold high up at the back of the engine. You have to get right underneath to reach it.

On mine it did require recoding to the ECU as some of them need to be reset to learn the new values. A dealer change and code on mine would have been about £250 including the part.

 

[reallymental@g]

Thank you for this