Hi Philip
This is the first time I have used the pscan on my MG ZT 260 as my engine warning light came on today. The software loads and works fine. There are two software format selections named Ford and T4. First question is why are there two and what are the differences?
Running the program shows a fault code P0138 Sensor Circuit High Voltage (Bank 1 Sensor 2). If I run the Ford format it says misfire not detected yet the T4 states detected. Should I be using only one? If so which one?

Please see attached readout with the O2 reading variations 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?


o2.jpg