Ford Focus UK 2017 1 litre petrol
I have a tyre pressure sensor that is very intermittent. The car is reporting that it cannot detect the sensor rather than reporting a low tyre pressure. I had this twice in the past week but the "fault" has always cleared with a further 5 minutes of driving.
Tyre pressures have been checked and all are OK.
I've used FORSCAN diagnostic tool to establish that the last warning occurred with sensor number 4 (of 4). More correctly sensor 4 shows a very large deviation from the values reported by the other 3 sensors.
Now the question is what wheel is associated with sensor 4? Is there a convention as to how the wheels are numbered for the purposes of diagnostics.