The exceptio doli generalis, which is the Roman law defence of “bad” faith, in the general form, has , until the decision of Bank of Lisbon and South Africa (SA) (Pty) Ltd, been one of the mechanisms that has been utilised by South African courts to apply abstract values of fairness and equity into the South African substantive law. The exceptio dolis generalis was available to a party in circumstances where the act of bringing the action by the other party constituted an act of “bad” faith. The court in the Bank of Lisbon and South Africa case decided that the exceptio doli generalis had never been received into Roman Dutch law and didn’t accept it as a defence that could be utilised and applied in South African law. After the decision in the Bank of Lisbon case there have been many differing views on whether the exceptio doli generalis can and should still be applied in South African law and concern in legal circles regarding the “gap” that the decision left in our law and the need to develop other means of ensuring greater fairness in the operation of the law of contract through possibly legislative intervention which at a stage was being investigated by the Law Commission. With the introduction of the Consumer Protection Act, Act 68 of 2008, the question which now comes to the fore is whether the Consumer Protection Act is a reintroduction of the exceptio doli generalis or whether the Act is merely a codification of the common law principles and abstract values of public policy/interest and good faith, which could mean one and the same thing. In order for this question to be answered an in depth investigation and study of theexceptio doli generalis, its applicability and development in South African law is required. Such a study is of importance in order for the aim and purpose of the defence to be properly understood. It is also necessary in order to understand how such a defence ties in and is closely linked with the abstract values and concepts of good faith and public policy/interest, which we have seen courts recognise in decisions subsequent to the Bank of Lisbon and South Africa case. Once this question is answered, attention will be turned to the Consumer Protection Act, its provisions and the effect thereof, and whether such provisions amount to the reintroduction of the exceptio dolis generalis but in an indirect way by the codification of the concepts of public policy/interest and good faith, which in turn could be the exceptio dolis generalis just called by a different name. The answer to this research question is very relevant and of extreme significance. It could mean that the South African legislature eventually got to doing what the legal profession has been asking of it for years and that is to put clarity on the defence of the exceptio doli generalis.