Lambda sensor needs to be replaced with the exhaust?

At my last MoT, there was a hole in the exhaust so the lambda sensor could not read emissions. I had hole welded and passed. This time exhaust needs replacing, but garage insists lambda needs replacing too. If no reading is taken from faulty exhaust, surely the sensor does not necessarily need replacing at £90 plus VAT?

I have spoken to other mechanics who seem to agree, but wanted some advice from you.

Asked on 1 December 2012 by alfabud

Answered by Honest John
If the exhaust is in the sport of state your email implies then it will not be possible to remove the old lambda sensor from it.
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