Answered: NEC ECC: Clause 45.2 - non access to correct defect

The clue is in the words in this clause 45.2 as opposed to 45.1 I.e.  "the cost to the CONTRACTOR of correcting the Defect" where as in 45.1, it is the cost to the Employer.

So you should demonstrate to the PM why it would cost you this amount and point out the difference between 45.1 and 45.2.