How is secondary air monitored?
When vehicles are equipped, the secondary AIR system monitor allows the PCM to ensure that extra air is being delivered to the exhaust system during cold engine operating conditions. The monitor usually runs on the start up of a cold engine, conditions permitting. …
What does secondary air system not supported mean?
Heated catalyst , secondary air system, ac sys refrigerant? If it says ‘ not supported’ , it means the system is not equipped with that item. Not all emissions systems are created equal.
How do I set my Mercedes air secondary monitor?
Open the hood, with engine cold start the car and listen to air pump. It will run up to 90 seconds. Keep it idling at ~1200 rpm until it reaches 83C, let it drop to idle, pump will come on for about 10 seconds and OBDII monitor will be set to ready.
What is secondary air system?
Secondary-air systems have been successfully employed to reduce such cold starting emissions. To reduce the level of these pollutants, ambient air with a high oxygen content (“secondary-air”) is injected into the exhaust manifold directly downstream of the exhaust valves during the cold starting phase.
Why is my secondary air system monitor not ready?
Determined I needed to replace my air pump, did that, and car is still failing due to the secondary air system monitor not being ready. I have no codes still and am super frustrated and unsure what to do.
When does secondary air injection monitor will not run?
I brought the truck in and all had reset except “Secondary Air System” Between December 22nd and Jan 21st 2016 I brought the truck back to the smog station 4 times and drove a total of 1300 miles – but Secondary Air System always showed not ready.
Can you pass smog without a 2A monitor?
This elaborate test can require a longer drive to finish. This is why sometime the 2A monitor will set as soon as the car starts and other times a drive cycle is required. In California a The Smog laws have recently changed. You will not be able to pass Smog without completing the secondary air readiness.
Can a SEC air system will not complete?
No matter what is done, the Sec Air System will not complete. The truck has 150k on the odo, runs great, no stored codes. What is the definitive word….can you pass a CA Smog check in 2015 with one I/M showing incomplete?