Category Events - New Zealand, Lower Hutt Broadband Oxygen Sensor Diagnostics (EMS1-6) Seminar Outline: Our EMS1-6 Seminar is technical and intricate (this is not for the faint hearted). In this training, we cover - Broadband oxygen sensor diagnostics. [Prerequisites: AED] Some of the interesting content we will cover: • We look at the effects of O2, A/F (Air/Fuel ratio) sensors and catalytic converter on the behaviour of the car and the emissions. • Understanding A/F sensor signals (scope and scantool) and how the A/F ratio sensor works electro-chemically together with the circuit of the ECU. • Full long and short fuel trim knowledge are vital in diagnosing an emission control system. We use an incredibly simple and innovative way to explain short and long fuel trims. • We learn to analyse through different fueling modes, for example looking at late model Asian vehicles with 5 different stored long fuel trims. • We examine and diagnose drivability issues where fault codes aren’t present. • In-depth look into A/F sensor related fault codes on Asian vehicles and each code’s diagnostics.