Mazda 6 Quiz
Fuel and emission control systems

Koeo/koer self-test

In this manual: Fuel and emission control systems
General information — 42Engine — 23Lubrication system — 10Cooling system — 9Fuel and emission control systems — 161Engine electrical system — 17Clutch — 21Manual transaxle — 10Automatic transaxle — 110Front and rear axles — 20Steering system — 15Braking system — 104Suspension — 34Body — 201Body electrical system — 287Heater and air conditioner systems — 89Technical data — 1Special tools — 1
~1min read

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located as shown in the figure.


2. Perform KOEO/KOER self-test.

Test yourself

A quick Mazda 6 quiz: every answer comes with an explanation and a link to the manual page.