Central Maine Power Co. is warning customers about a scam that attempts to get customers to give private banking information over the telephone.

CMP said several local automobile dealerships and repair shops reported receiving telephone calls from someone purporting to be from the utility. The person said a payment had been misapplied and asked that the customer fax copies of their checks to a toll-free number to fix the problem.

If the customer questions the caller, a genuine CMP customer service number if provided. The fax number, however, is not a CMP number.

CMP already has all the information it needs to discuss a customer’s account, the company said.