After lots of OBD faults reported, getting to the bottom of them there is just one remaining possible issue...
1.8 2003 C petrol SRi. Its constantly reporting the O2 bank 1, sensor 1 heater as a pending code, but the MIL doesn't light and the code is not stored. There is only one bank - one front and one rear. This is the front one below the manifold. Is it normal for the fault to show please?I didn't think the heater was needed for the front O2 sensor, only the rear which takes longer to warm up.