In the case of a transaction prohibited by section
1106 of this title by a party in interest with respect to a plan to which this part applies, the Secretary may assess a civil penalty against such party in interest. The amount of such penalty may not exceed 5 percent of the amount involved in each such transaction (as defined in section
4975
(f)(4) of title
26) for each year or part thereof during which the prohibited transaction continues, except that, if the transaction is not corrected (in such manner as the Secretary shall prescribe in regulations which shall be consistent with section
4975
(f)(5) of title
26) within 90 days after notice from the Secretary (or such longer period as the Secretary may permit), such penalty may be in an amount not more than 100 percent of the amount involved. This subsection shall not apply to a transaction with respect to a plan described in section
4975
(e)(1) of title
26.