P0411 code question
Thread Starter
AudiWorld Newcomer
Joined: Dec 2019
Posts: 2
Likes: 0
P0411 code question
The code says its to do with secondary air flow being incorrect.
My question is could a missing crankcase hose cause this code as well? it comes off the 3 way crankcase hose, Ts off the bottom and the hose attaches underneath the throttle body, in hard to reach spot without removing the air intake duct.
I have a 98 Audi A6 2.8l 30v quattro.
My SAIP does turn on
I have swapped out old vacuum lines with new
i have a new pcv valve
i am missing the 90 degree elbow that attaches the SAIP hose to the air filter box. How important is that with clearing this code?
I to date have cleared codes relating to the CPS
after i swapped vacuum line into the FPR it cleared a lean fuel condition code
Only code i have now is p0411 it gives me a check engine light, and in my state the car cannot have a engine light on to pass inspection.
So my question again is, could the missing hose at the back of the motor, under the throttle body area, attaching itself to the T that is also attached to the PVC valve, throw a p0411 code, is it even related to incorrect air flow from SAIS?
My question is could a missing crankcase hose cause this code as well? it comes off the 3 way crankcase hose, Ts off the bottom and the hose attaches underneath the throttle body, in hard to reach spot without removing the air intake duct.
I have a 98 Audi A6 2.8l 30v quattro.
My SAIP does turn on
I have swapped out old vacuum lines with new
i have a new pcv valve
i am missing the 90 degree elbow that attaches the SAIP hose to the air filter box. How important is that with clearing this code?
I to date have cleared codes relating to the CPS
after i swapped vacuum line into the FPR it cleared a lean fuel condition code
Only code i have now is p0411 it gives me a check engine light, and in my state the car cannot have a engine light on to pass inspection.
So my question again is, could the missing hose at the back of the motor, under the throttle body area, attaching itself to the T that is also attached to the PVC valve, throw a p0411 code, is it even related to incorrect air flow from SAIS?
AudiWorld Super User
Joined: Jul 2013
Posts: 2,665
Likes: 213
From: In the Cloud
If it's just from the air cleaner system, before the Mass Airflow Sensor, it is unmetered air and should not cause a problem.
The Ross Tech Wiki shows the following for P0411
16795/P0411/001041
Contents
1 16795/P0411/001041 - Secondary Air Injection System: Incorrect Flow Detected
1.1 Possible Symptoms
1.2 Possible Causes
1.3 Possible Solutions
16795/P0411/001041 - Secondary Air Injection System: Incorrect Flow Detected
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Possible Causes
Fuel Pump Relay (J17) faulty
Hoses/Pipes to/between Components faulty/clogged
Secondary Air Injection Pump (V101) faulty
Secondary Air Injection Pump Relay (J299) faulty
Secondary Air Injection Solenoid Valve (N112) faulty
Possible Solutions
Check Fuel Pump Relay (J17)
Check Hoses/Pipes to/between Components
Check Secondary Air Injection Hoses/Pipes for Carbonization
Check Secondary Air Injection Pump (V101)
Check Secondary Air Injection Pump Relay (J299)
Check Secondary Air Injection Solenoid Valve (N112)
The Ross Tech Wiki shows the following for P0411
16795/P0411/001041
Contents
1 16795/P0411/001041 - Secondary Air Injection System: Incorrect Flow Detected
1.1 Possible Symptoms
1.2 Possible Causes
1.3 Possible Solutions
16795/P0411/001041 - Secondary Air Injection System: Incorrect Flow Detected
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Possible Causes
Fuel Pump Relay (J17) faulty
Hoses/Pipes to/between Components faulty/clogged
Secondary Air Injection Pump (V101) faulty
Secondary Air Injection Pump Relay (J299) faulty
Secondary Air Injection Solenoid Valve (N112) faulty
Possible Solutions
Check Fuel Pump Relay (J17)
Check Hoses/Pipes to/between Components
Check Secondary Air Injection Hoses/Pipes for Carbonization
Check Secondary Air Injection Pump (V101)
Check Secondary Air Injection Pump Relay (J299)
Check Secondary Air Injection Solenoid Valve (N112)
Thread
Thread Starter
Forum
Replies
Last Post
bigworm000
A4 (B5 Platform) Discussion
1
Nov 3, 2007 08:53 AM
Catamount90
Audi 90 / 80 / Coupe quattro / Cabriolet
7
Dec 18, 2005 09:29 AM
RDROCKTT aka Stealth
TT (Mk1) Discussion
0
Apr 17, 2001 03:18 AM
