Legal Question in Real Estate Law in California

Re: Fence on the Property Line Dispute

California Civil Code section 841 provides:

Coterminous owners are mutually bound equally to maintain:

(1) The boundaries and monuments between them;

(2) The fences between them, unless one of them chooses to let his land lie without fencing; in which case, if he afterwards incloses it, he must refund to the other a just proportion of the value, at that time, of any division fence made by the latter.

I did some research to see whether there is some exception to the general principles of trespass to allow entry onto a neighbor's land to repair a boundary fence. Although it seems logical that such a technical trespass might be excused by some sort of implied easement, I find no decision or law to that effect. So, therefore, I conclude that going onto the neighbor's property without permission to maintain the boundary fence is a technical trespass, although it's hard to imagine a court awarding anything more than nominal damages for it.