P0411 code - TerrainForum.net: GMC Terrain Forum
 3Likes
  • 1 Post By rednox301
  • 1 Post By bigb12359
  • 1 Post By bigb12359
 
LinkBack Thread Tools
post #1 of 6 (permalink) Old 01-21-2020, 05:02 PM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 3
P0411 code

I have a 2015 Equinox and have been getting a P0411 Secondary Air Injection System Incorrect Flow Detected. My air pump was a bit corroded so I replaced that. I also had a hole in my resonator and replaced that. I reset the code and start fresh and every couple days the code returns. Anyone have any thoughts on this, possibly the check valve?

Thanks!

Last edited by msevans1; 01-22-2020 at 10:27 AM.
msevans1 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 01-21-2020, 06:35 PM
Theta Freak
 
rednox301's Avatar
 
Join Date: Nov 2014
Posts: 1,894
Quote:
Originally Posted by msevans1 View Post
I have a 2015 Equinox and have been getting a P4011 Secondary Air Injection System Incorrect Flow Detected. My air pump was a bit corroded so I replaced that. I also had a hole in my resonator and replaced that. I reset the code and start fresh and every couple days the code returns. Anyone have any thoughts on this, possibly the check valve?

Thanks!
Yes the Secondary Air Injection System has a shut off and check valve that can set P0411.
You posted P4011, was that a typo?
bigb12359 likes this.

2014 Equinox LTZ FWD 3.6L. V-6 (LFX)
GM6T70 Transmission-Gen II(M7W)
Crystal Red Tintcoat-Brownstone Leather-(FE2) Suspension-18" Wheels
Build Date: Nov. 04, 2013-Delivery Date: Nov. 25, 2013
rednox301 is offline  
post #3 of 6 (permalink) Old 01-22-2020, 10:28 AM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 3
Yes, typo should have said P0411. thanks!
msevans1 is offline  
Sponsored Links
Advertisement
 
post #4 of 6 (permalink) Old 01-22-2020, 10:46 AM
Theta Freak
 
Join Date: Mar 2011
Posts: 1,202
The ECM monitors the secondary air injection system for faults during cold start operation.When the system's pressure or relay circuits operations vary too far from the expectedvalues, a DTC will set. Diagnostics detect the following conditions:
•A partially or fully blocked or leaking secondary air injection system
•A malfunctioning secondary air injection pump
•A malfunctioning secondary air injection solenoid (shutoff and check) valve assembly
•A malfunctioning secondary air injection pressure sensor
•A restricted exhaust system
•A malfunctioning secondary air injection pump and secondary air injection valve relay

The following DTCs set when a secondary air injection system fault is detected:
•DTC P0411 – A secondary air injection system insufficient airflow fault conditionhas been detected.
•DTC P0412 – A secondary air injection valve relay coil circuit fault condition hasbeen detected.
•DTC P0418 – A secondary air injection pump relay coil circuit fault condition hasbeen detected.
•DTC P2430 – A secondary air injection pressure sensor signal stuck in range faultcondition has been detected – bank 1 (Cylinder 1/2 - Right Side).
•DTC P2431 – A skewed air injection pressure sensor signal has been detected – bank 1(Cylinder 1/2 - Right Side).
•DTC P2432 – A secondary air injection pressure sensor signal voltage below the minimumrange of the sensor fault condition has been detected – bank 1 (Cylinder 1/2 - RightSide).
•DTC P2433 – A secondary air injection pressure sensor signal voltage is above themaximum range of the sensor fault condition has been detected – bank 1 Cylinder 1/2 - Right Side).
•DTC P2435 – A secondary air injection pressure sensor signal stuck in range faultcondition has been detected – bank 2 (Cylinder 3/4 - Left Side).
•DTC P2436 – A skewed air injection pressure sensor signal has been detected – bank 2(Cylinder 3/4 - Left Side).
•DTC P2437 – A secondary air injection pressure sensor signal voltage below the minimumrange of the sensor fault condition has been detected – bank 2 (Cylinder 3/4 - LeftSide).
•DTC P2438 – A secondary air injection pressure sensor signal voltage is above themaximum range of the sensor fault condition has been detected – bank 2 (Cylinder 3/4 - Left Side).
•DTC P2440 – One or both of the solenoid (shutoff and check) valves are stuck openor a system leak between the pump and the valves has been detected.
•DTC P2444 – A secondary air injection pump stuck ON fault condition has been detected.
rednox301 likes this.
bigb12359 is offline  
post #5 of 6 (permalink) Old 01-22-2020, 10:48 AM
Theta Freak
 
Join Date: Mar 2011
Posts: 1,202
Secondary Air Injection System Description



The Secondary Air Injection System aids in the reduction of hydrocarbon exhaust emissionsduring a cold start. This occurs when the start-up engine coolant temperature (ECT)is between −10 to +56°C (14–133°F), the intake air temperature (IAT) is greater than −10°C (14°F) and it has been more than 60 minutes since the last engine start. Thesecondary air injection pump operates 5–60 s after start-up.

The engine control module (ECM) activates the secondary air injection system by simultaneouslycompleting the ground paths for the secondary air injection pump relay and the secondaryair injection solenoid (shutoff and check) valve relay. This action closes the relays'internal contacts. The pump and both valves are in turn energized. The pump turnsON and both valves open.

The secondary air injection pump sends pressurized filtered fresh air into the pipes/hoses,through the open valves and into the exhaust manifold(s). The extra air acceleratesthe catalyst operation, helping it to reach operating temperature faster. The secondaryair injection pump remains ON for a short period of time after the valves are commandedOFF. When the pump is commanded OFF it will not run or be activated until the nextvehiclecold start. When the secondary air injection system is inactive, the valves are closedto prevent air/exhaust flow in either direction.

The ECM monitors the secondary air injection system pressure by tracking voltage signalsfrom the pressure sensors, which are integral to the solenoid (shutoff and check)valve assemblies.

The ECM utilizes a 3 phase diagnostic routine to test the secondary air injectionsystem:

During phase 1, DTCs P0411, P2430 and P2435 run and both the secondary air injectionpump and the solenoid (shutoff and check) valves are activated. Normal secondary airfunction occurs. Expected system pressure is 5–13 kPa (0.7–1.9 psi) above BARO.

During phase 2, DTCs P2430, P2435 and P2440 run and only the secondary air injectionpump is activated. The valves are closed. Pressure sensor performance and valve deactivationare tested. Expected system pressure is 14–25 kPa (2.0–3.6 psi) above BARO.

During phase 3, DTC P2444 runs and neither the secondary air injection pump nor thevalves are activated. Secondary air injection pump deactivation is tested. Expectedsystem pressure equals BARO.

The secondary air injection system includes the following components:
•The secondary air injection pump—The electric secondary air injection pump suppliespressurized, filtered air to the secondary air injection solenoid (shutoff and check)valves. The secondary air injection pump is a turbine type pump that is permanentlylubricated and requires no periodic maintenance.


Note: The secondary air injection solenoid valve and the pressure sensor are serviced asan assembly.
•The secondary air injection solenoid (shutoff and check) valve assemblies—The valveassemblies have direct current (DC) motor operated valves. When the valve motors areenergized by the secondary air injection solenoid valve relay, the valves open, pressurizedair from the secondary air injection pump flows through the valves and is directedinto the exhaust manifold(s).
•The secondary air injection pressure sensors—The pressure sensors are integral tothe secondary air injection solenoid valve assemblies. The sensors are 3-wire sensorsthat measure the secondary air injection system pressure at the inlets of the valveassemblies.
•The secondary air injection pump relay—The relay supplies high current and batteryvoltage to the secondary air injection pump. The ECM commands the relay ON by supplyinga ground to the relay control circuit.
•The secondary air injection solenoid valve relay—The relay supplies high current andbattery voltage to the secondary air injection solenoid valves. The ECM commands therelay ON by supplying a ground to the relay control circuit.
•The pipes and hoses—The secondary air injection pump inlet hose carries filtered airfrom the engine intake air cleaner to the secondary air injection pump inlet. Thesecondary air injection pump pipe carries the air from the pump outlet to the solenoidvalves which in turn feed the exhaust manifold(s).
rednox301 likes this.
bigb12359 is offline  
post #6 of 6 (permalink) Old 01-29-2020, 09:11 AM Thread Starter
Newbie
 
Join Date: Jul 2019
Posts: 3
Thank you!
msevans1 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TerrainForum.net: GMC Terrain Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome