MIL on. DTCs are stored in the engine control module. The DTCs may appear during monitoring of the secondary air system during the engine cold starting phase. With the electric solenoid valves controlled, a diagnosis cycle is performed and the secondary air pressure is measured for a specified value. The secondary air pressure can be influenced by several factors; which may include a leak in the vacuum system or a faulty exhaust catalyst. Review the Service section of this bulletin for more information.
