Intermittent Oxygen Sensor issues

[TiTony]

Hi,

I know I'm a bit of a fraud on this site as I only have a 4.2 but hopefully someone will be good enough to comment. You people usually do thankfully.

About once a month the management light comes on which is caused by an intermittent fault on the rear two sensors although the system states just monitor them rather than change them. I only use 97 petrol and thankfully my local garage don't charge me to reset it so it's just a nagging problem rather than terminal.

Does anyone think it's a problem I should fix promptly, or wait at least until after Xmas when the financial burden is slightly reduced?

Cheers

Tony