Tomorrow's Technician

MAY 13, 2024

This standardized many of the onboard emissions protocols and codes and allowed states to perform onboard emissions testing. As time passed, even large trucks and motorcycles adopted this same method to test the emissions status of a vehicle. Most engine control modules store only one freeze frame record per code.

Check Engine Light 189

Check Engine Light Emissions Testing Engineering Banking 189

Tomorrow's Technician

OCTOBER 20, 2023

Some misfire complaints are a flashing check engine light, and a P0300 to P0312 diagnostic trouble code (DTC) indicates that one or more cylinders are misfiring. Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test.

Engineering 130

Engineering Check Engine Light Emissions Testing Mechanic 130

Tomorrow's Technician

NOVEMBER 21, 2023

Some misfire complaints are a flashing check engine light, and a P0300 to P0312 diagnostic trouble code (DTC) indicates that one or more cylinders are misfiring. Unfortunately, a misfire also will cause a considerable increase in hydrocarbon (HC) emissions, which can cause a vehicle to fail an emissions test.

Engineering 130

Engineering Mechanic Check Engine Light Emissions Testing 130

RepairSmith

APRIL 25, 2024

An Illuminated Check Engine Light It’s almost impossible to physically detect an EVAP leak. So when the leak detection pump in the exhaust system suspects a small EVAP leak event, it immediately turns the Check Engine Light on. A smoke test uses a smoke machine to find hard-to-detect fuel vapor leaks.

Emissions Testing 52

Emissions Testing Check Engine Light Mechanic Engineering 52