how to fix code 1051 and 1168
P1168 and P1051 are for the Oxygen sensor (air to fuel ratio sensor)
you might get lucky and not have to replace the sensor, by clearing the ECU self learn
The easy way is to disconnect the battery, for at least 30min.
if that does not help the sensor will have to be replaced on Bank 2 Sensor 1, if you still have a problem the
the ECU may also need to be updated
https://www.autocodes.com/uploads/infiniti/ITB04-027a.pdf
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