Here are the outputs all at tickover
.
Bank 2 U/S O2 Heater fluctuates between on/off
Bank 1 U/S O2 Volts fluctuates between 0.06/0.83
Bank 1 D/S O2 Volts steady at 1.67
Bank 2 U/S O2 Volts fluctuates between 0.05/0.81
Bank 2 DS O2 Volts this climbs slowly from 0 to 0.9 but returns to 0 if the revs are lifted.
Listening to the engine there appears to be an intermittent misfire?? a put put sound at the exhaust.
I am aware that the error code could be caused by
1. the sensor
2. wiring/connections
3. leaking injector
4. catalyst
What would be a logical fault finding procedure based on the above data?