(a) Any person may petition the Secretary in writing to open an investigation into whether noncompliances, defects, serious defects, or imminent safety hazards exist in manufactured homes. A petition shall include the reasons that the petitioner believes warrant an investigation, and it shall state any steps which have previously been taken to remedy the situation. The petition shall include all information known to the petitioner concerning the identity of manufactured homes which may be affected and where those manufactured homes were manufactured. The Secretary shall respond to petitions concerning alleged imminent safety hazards and serious defects within 60 days and to petitions alleging the existence of defects or noncompliances within 120 days.

(b) Any person may petition the Secretary in writing to undertake an investigation for the purpose of determining whether a primary inspection agency should be disqualified. The petition shall set out all facts and information on which the petition is based and a detailed statement of why such information justifies disqualification. The Secretary shall consider such petitions when making determinations on final acceptance and continued acceptance. The Secretary shall respond to such petition within 120 days.