My friend's Zantia has just failed its MOT on Lambda emissions. She is in no position to torch it, crush it or take up running, so is keen to get it sorted at minimal cost (if it's even vaguely worth it), or else start walking everywhere.
I guess there could be a multitude of reasons why the lambda is out, but I'm hoping someone with sufficient knowledge on here may be able to suggest some options please (with possible ballpark costs?). (Given the miles etc. I wonder whether just changing the lambda sensor may be the answer ?)
Here are the details.....
Citroen Zantia Petrol 1756cc P-reg 106,422 miles (Engine last serviced at a garage approx 18 months ago at around 90-95,000 miles)
Fast Idle Test CO Limit 0.30%vol Tested 0 HC Limit 200ppmvol Tested 7 Lambda Limit 1.030 Tested 1.034