What causes P0411?
Injecting air into the exhaust stream leans out the unburned air/fuel mixture, causing the gases to burn hotter and reducing HC (hydrocarbon) and CO (carbon monoxide). DTC P0411 indicates the engine control unit (ECU) has detected an air flow problem within the secondary air injection system.
What is a po411?
Code P0411 may get registered when the amount of air entering the exhaust is not what the powertrain control module (PCM) expects. A traditional air injection system contains the following components: An air pump. A check valve in the air supply line that stops exhaust gases from flowing to the pump and other …
What does the p0411 code on a check engine light mean?
What the P0411 code means. P0411 indicates that the ECU has detected the flow from the secondary air injection system to be out-of-specification. This causes the Check Engine Light to be set and displayed on the dashboard. The light will remain on until normal operation occurs or repairs are performed.
How can I fix the p0041 code on my car?
As with any DIY repair, we advise that you utilize all of the auto repair resources and guides available online to help you figure out the proper steps to fix the P0041 code. You can also get an ALLDATA single-vehicle subscription, which will be useful for this fix and for any other future repairs your vehicle may need.
What to do if your GMC Terrain has a p0411 code?
There are several avenues of repair for a P0411, such as cleaning the secondary air passages—a common fix on GMC Terrain vehicles. Make sure to figure out the appropriate resolution by researching some of the fixes other people have employed to address a P0411 on their vehicle (assuming it’s the same vehicle as yours).
What causes the Check Engine light to remain on?
P0411 indicates that the ECU has detected the flow from the secondary air injection system to be out-of-specification. This causes the Check Engine Light to be set and displayed on the dashboard. The light will remain on until normal operation occurs or repairs are performed. What causes the P0411 code? What are the symptoms of the P0411 code?