On 31/12/2019 08:56, Jim GM4DHJ ... wrote:
Five years ago I got a PO130 code when the car was running rough so I
replaced the bank 1 sensor 1.....yesterday I got the engine management
light and got a PO135Â* code for the sensor ... so the heater in the
sensor has gone....car is running fine I assume this will be an MOT
failure even though the car is running fine.....why the hell do they fit
heaters to these sensors just to gain some minor emissions crap until
the engine has heated up ?...

update... cancelled the fault code and the engine management light
hasn't come back on...fingers crossed it stays off.....