For a retest, the vehicle owner or driver shall present to the inspection station the emission inspection report and the diagnostic information repair data form as described in § 177.273 (relating to content of repair data form).
67 Pa. Code § 177.272
This section cited in 67 Pa. Code § 177.52 (relating to emission inspection prerequisites); and 67 Pa. Code § 177.408 (relating to certified emission inspectors).