Smog Check Diag. & PDTC's Update

Dates: 12/01/2022-12/13/2022

Number of Meetings: 4

Course Hours:16

Meeting Days: Tuesday & Thursday

Meeting Time: 6pm-10pm

Course Description:

UT062 SMOG CHECK DIAGNOSIS & PDTCS

Although gasoline is the commonly used fuel, there are several alternative flex-fuels that can be used in some of today’s vehicles. Diesel fuels contain less amounts of sulfur and this allows the introduction of many new clean burning diesel engines, and biodiesel fuels. Air/fuel ratios are affected by octane rating and fuel trim will react accordingly. Monitors and Mode $06 are essential diagnostic tools that can help identify difficult drivability concerns by looking at the results of the PCM tests on the various emissions systems. Beginning July 1, 2019, 2010MY and newer vehicles with an OBD II Permanent Diagnostic Trouble Code (PDTC) stored in the vehicle’s computer memory will fail the BAR-OIS Smog Check. This additional check increases existing inspection requirements and failure criteria for OBD II vehicles. Understanding PDTCs and the process to delete codes stored in permanent memory is an essential skill to verify emission repairs are successful.