Question about 1997 BMW 328

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I think my secondary air pump or the vacuum control valve is bad

I have a check engine light on and the fault codes mention low air flow. I dont hear any noise from the pump. How can I check to see if its the pump or the Vacuum Control Valve that is bad?

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  • Freddy Martinez Aug 08, 2009

    Thanks. But my check engine light is on and i didnt pass smog here in california... :( I got it taken care of though. thx

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  • BMW Master
  • 2,019 Answers

Don't worry about it.
The air pump is not good for the car or the environment. It just dilutes the percentage for passing DEQ.
But it is easy to check the control valve just by taking off the small control line, and sucking on it manually. You should be able to feel the air flow in the large hose turn on and off, as you **** and release.

Posted on Aug 06, 2009

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I have a service engine soon light on and have hooked up an OBD11 reader to it and got code P0410 pertaining to a secondary air injection problem. hoses are fine, pump is new.


P0410 Oldsmobile - Secondary Air Injection System Malfunction

Possible causes: - Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed

Tech notes: Visually inspect AIR pump and AIR bypass valve harness and connector, if connector are OK, then replaced AIR bypass valve.

When is the code detected? The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.

Possible symptoms: - Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation

P0410 Oldsmobile Description An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.
P0410 Oldsmobile Secondary Air Injection System Malfunction

May 30, 2015 | 2001 Oldsmobile Intrigue

1 Answer

P0410, p2101 and p0014 codes


Possible causes
- Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed
help.jpg What does this mean? When is the code detected?
The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation
P0410 Description
An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.

Read more: http://engine-codes.com/p0410.html#ixzz31FMsMMLJ

Mar 27, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

I replaced my secondary air check valve on my 2001 chevy tahoe but code 1416 still comes up. what else can i check


here is what i found on p1416.



P1416 Chevrolet
P1416 Chevrolet - Secondary Air Injection System Bank 2
Possible causes
- Faulty Secondary Air Injection (AIR) pump
- Secondary Air Injection check valve bank 2
- Secondary Air Injection (AIR) pump electrical circuit fault
- Blocked Secondary Air Injection (AIR) system

When is the code detected?

The P1416 code is set when no O2 sensor voltage change is detected by the Engine Control Module (ECM).


Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)


P1416 Chevrolet Description
An Secondary Air Injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump. The Powertrain Control Module (PCM) monitors the HO2S voltages to diagnose the AIR system. During the AIR test the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.

Jan 23, 2014 | 2001 Chevrolet Tahoe

1 Answer

PO411 WHAT DOES THIS MEAN


Step 1:


What does tP0411 Secondary Air Injection System Incorrect Flow DetectedWhat does that mean? Secondary Air Injection is an emission control that uses an air pump (either electric or turned by the drive belt) to move fresh air into the exhausticon1.png manifold(s) or exhaust ports when the engine is in open loop and pre-catalytic converter when in closed loop. This reduces hydrocarbon emissions (HC), Carbon Monoxide (CO), and oxides of Nitrogen (NOx). This fresh air helps convert Carbon Monoxide (CO) into Carbon Dioxide (CO2) and Hydrocarbons (HC) into water vapor (H20).
A check valve is located in the air supply line to keep exhaust gasses from flowing into the pump. A cutoff valve that controls the airflow may be vacuum controlled or electrically controlled. When the powertrain control module (PCM) activates the valve, vacuum travels to the cutoff valve to open it and allow fresh air to flow. Some systems may have only a check valve and the flow may be regulated by a electromagnetic clutch on the air pump (similar to an A/C clutch).
Under hard acceleration, the air pump will be deactivated to prevent backfiring in the exhaust. To self-check, the AIR system will be activated by the PCM and fresh air would be routed into the exhaust system. The oxygen sensors would sense this fresh air as a lean condition and the short term fuelicon1.png trims would begin to move in the positive direction to compensate. The PCM expects to see this happen within just a few seconds during the self test. If it does not see the short term fuel trims rise, then the PCM interprets this as a malfunction in the AIR system and a code will be recorded.

Step 2:

Symptoms Symptoms of a P0411 DTC may include:
  • MIL (Malfunction Indicator Lamp) illumination
  • Backfiring in the exhaust under hard acceleration
  • Engineicon1.png running rich (This is counter-intuitive. See explanation below)
  • Squealing belt
Causes Potential causes of a P0411 code include:
  • Damaged or missing check valve
  • AIR pump intake port plugged/damaged
  • AIR pump clutch malfunction
  • Holes or damage to exhaust components

Step 3:

Possible Solutions If you have access to a scan tool, with KOEO (Key on engine off) command the AIR pump on. It should activate. If it doesn't, remove and inspect the AIR pump relay for discoloration/melting due to heat. Repair as necessary.
With the ignition on (engine off) check for battery voltage at the switched battery feed to the relay and the relay control circuit. If either of these isn't present, inspect circuit for blown fuse or open/short in the wiring. Repair cause of short and retest. If they are both present, jumper the battery feed to AIR pump feed circuit using a fused jumper. The pump should activate. If not, check for powericon1.png and ground present at the AIR pump when jumpered. If there is no voltage/ground present at pump repair open in wiring harness. If voltage and ground is present, but pump still does not run, suspect a bad AIR pump. If after jumpering the AIR pump feed circuit the pump activates then the problem is likely the AIR pump relay. Replace and retest.
If the scan tool activates the AIR pump, with KOER (Key on engine running) activate the AIR pump solenoid valve on and see if there is vacuum to the cutoff valve. It should have vacuum present to open the valve. If there is no vacuum present, check the AIR pump's vacuum solenoid valve for vacuum supply from the manifold. If there is vacuum present then the vacuum solenoid is likely bad. Replace it. If there is no vacuum present at the supply to the vacuum solenoid, check for a plugged or damaged vacuum line or plugged vacuum port. But if there is vacuum present at the cut-off valve, shut the engine off and using a vacuum pump, apply vacuum to the cut-off valve and see if it holds a vacuum and that air flows through it when vacuum is applied. If it doesn't hold vacuum or the valve doesn't flow when vacuum is applied, replace the cut-off valve. If the cut-off valve works properly, inspect the check valve for obstruction or to see if it's missing. Replace as necessary.
Check the steel line to the exhaust catalyst as well as the exhaust ports for damage or holes that could give a false reading.

Feb 19, 2013 | 2007 Buick LaCrosse CXL Sedan

1 Answer

Service Engine Soon light came on. Took the car to Auto Zone the code P0410 popped up. What does this mean?


This is a secondary air system malfunction code.....

The Secondary Air System pumps outside fresh air into the Exhaust System during cold engine start up. This additional air helps burn up the highly rich exhaust emissions that are produced when the engine is warming up. The Secondary Air System typically has an Air Pump and some tubes or plumbing to route the air. The system also has a solenoid and Check Valve(s) to control the air flow.

Common Problems That Trigger the P0410 Code
  • Defective Check Valve(s)
  • Faulty Air Pump or Air Pump Relay
  • Faulty air control solenoids or vacuum lines
  • System may be restricted or plugged
Let me k now which direction you want to head in and we will check further

Feb 21, 2011 | Oldsmobile Bravada Cars & Trucks

2 Answers

Car is choking out and dying. Reads P 0411 code. How do I know if its the motor or just the solenoid valve? How can I check to narrow down what actually is causing the problem? It's on a 2000 VW jetta VR6


16795/P0411/001041


if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } 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)

Apr 28, 2010 | 2000 Volkswagen Jetta TDI

1 Answer

Have an engine code for a check engine light 1423 and 1411 for an Audi A6 Quatro 2001


P1411 - secondary air injection system flow too low Bank 2.
P1423 - secondary air injection system flow too low Bank 1.
Check vacuum hoses to combi valves ,
most common split air injection pump which is riveted with aluminum rivets,ck rivets if they coming out ,pump doesn't build enough pressure.
In this case take pump out and put bolts instead of rivets all around pump case.Repl. all rivets not only broken one.Bolts sold at HomeDepot , just find a needed size.

Apr 19, 2010 | 1999 Audi A6

2 Answers

Hello i have a 2000 AUDI A-6 2.7T the engine light is on had it checked it is a p1411 code can I fix it myself


Code is - Secondary air injection system, bank 2 flow too low.

Check fuse for sec. air injection pump.
Check vacuum hoses
Check piping from pump to sec. air injection valve. (combi. valve)

Sep 18, 2009 | 2000 Audi A6

2 Answers

1996 saab 900-s


There's a black plastic valve below the battery that fails frequently on these cars. It has a vacuum line and 2 thumb-sized hoses going to it. A lot of times the valve will be broken in half and obviously bad. This will cause a secondary air injection code. Also the vacuum hose to it needs to be intact. Check this stuff first.

Oct 28, 2008 | 1996 Saab 900

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