(a) Except as otherwise provided in the code, a security agreement is effective according to its terms between the parties, against purchasers of the collateral, and against creditors.
(b) A transaction subject to this chapter is subject to (1) an applicable rule of law that establishes a different rule for consumers;
(2) another statute or regulation that regulates the rates, charges, agreements, and practices for loans, credit sales, or other extensions of credit; and
(3) consumer protection statutes or regulations.
(c) In case of conflict between this chapter and a rule of law, statute, or regulation described in (b) of this section, the rule of law, statute, or regulation controls. Failure to comply with a statute or regulation described in (b) of this section has only the effect the statute or regulation specifies.
(d) This chapter does not (1) validate a rate, charge, agreement, or practice that violates a rule of law, statute, or regulation described in (b) of this section; or
(2) extend the application of the rule of law, statute, or regulation to a transaction not otherwise subject to it.