What is the DTC code for secondary air injection system malfunction?
P0410 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Malfunction".
What is a secondary air injection system?
A secondary air injection system is part of a vehicle’s emission system. It’s used to reduce emissions during cold starts when the engine is running on a rich fuel mixture to overcome the cold quenching effect of cold combustion cylinders.
What happens when a secondary air injection pump goes bad?
The purpose of the secondary air injection pump is to reduce hydrocarbons in your emissions system. So, if you have a bad secondary air injection pump, then it means your emissions system will be allowing too many hydrocarbons to be released into the atmosphere.
What causes a p0410 code on a secondary air injection system?
The P0410 code indicates that a problem is encountered with the secondary air injection system and it is caused by either a mechanical or an electrical fault. The P0410 trouble code is usually triggered when the vehicle’s emission system is faulty or the air pump is damaged.
How do you fix a secondary air injection system?
What repairs can fix the P0410 code?Replacing the air injection pump and power relay.Replacing O2 sensors that respond too slow as they age.Replacing the air injection pump intake filter clogged with debris.
What causes a secondary air injection system malfunction?
A faulty pump is generally the most frequent cause of the system failing. Ingress of moisture can cause damage which results in seizure of the pump. Faulty ground and voltage supply can also cause the pump to fail.
How much does it cost to fix a secondary air injection system?
Overall, repairing a secondary air injection system will cost you around $450. This cost is split between the cost of parts and the cost of labor. New parts will cost about $250 while labor will usually cost another $150-$200.
What does a secondary air injection system do?
Secondary air injection (commonly known as air injection) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller secondary combustion of exhaust gases.
Can I drive without secondary air injection?
Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised. What is this? This stems from the fact that a faulty secondary injection pump can cause a host of drivability-related issues, most of which can vary significantly in severity, on a case-by-case basis.
Can you clean the secondary air injection system?
The basic procedure is to put solvent and compressed air into the SAI system on the top of the engine and clean the ports from the bottom until air runs freely through the passages. The supplies you will need two bottle of carburetor cleaner.
What happens when air injection fails?
If your secondary air injection pump has failed, you may notice that the catalytic converter is not working as well as it should. This problem can lead to a loss in power and performance from your engine. The catalytic converter is the engine's first line of defense against harmful emissions.
Where is the secondary air injection system located?
The secondary air injection pump is usually located on the engine or at least in the engine bay. It can sometimes be hidden deep into the engine bay, but mostly you will find it installed pretty visible on the engine.
Can I drive my car with a P0410 code?
Diagnosis: This trouble code will not prevent your vehicle from running. The most common result is increased emission from your vehicle. However, if left unsolved, this code could cause your vehicle to fail emission(s) testing.
How do you test a secondary air injection system?
The secondary air valve can be quickly inspected in an easy way:Loosen the connecting hose on the secondary air non-return valve leading to the secondary air pump. ... If there are deposits on this side of the valve (finger test, see Fig. ... Inspect the secondary air pump and replace it if necessary.
Can a secondary air pump cause a misfire?
Can a Secondary Air Pump Cause a Misfire? Yes, a misfire is a common sign of a faulty secondary air system. If the pump isn't working properly, there will be too much fuel and not enough oxygen in your vehicle, which often results in a misfire.
How much does an air pump cost?
The average cost for air pump replacement is between $482 and $584. Labor costs are estimated between $77 and $97 while parts are priced between $406 and $487. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
What happens when air injection fails?
If your secondary air injection pump has failed, you may notice that the catalytic converter is not working as well as it should. This problem can lead to a loss in power and performance from your engine. The catalytic converter is the engine's first line of defense against harmful emissions.
How do you test a secondary air injection system?
The secondary air valve can be quickly inspected in an easy way:Loosen the connecting hose on the secondary air non-return valve leading to the secondary air pump. ... If there are deposits on this side of the valve (finger test, see Fig. ... Inspect the secondary air pump and replace it if necessary.
Can I drive with a P0410 code?
You may drive your vehicle with a P0410 however keep in mind your vehicle will not pass a smog inspection. Problems with the air injection system will not cause any driveability symptoms. The check engine light or malfunction indicator lamp will be illuminated as long as a P0410 is recorded in the ECC.
Can a secondary air injection pump cause a misfire?
Can a Secondary Air Pump Cause a Misfire? Yes, a misfire is a common sign of a faulty secondary air system. If the pump isn't working properly, there will be too much fuel and not enough oxygen in your vehicle, which often results in a misfire.
How does the Secondary Air Injection System Work?
Again, the purpose of the Secondary Air Injection System is to reduce emissions after a cold start by burning fuel that made it through the engine un-combusted . But how is this accomplished? As we learned in high school science class, oxygen is one of the elements required for combustion. Most of the air sent through the induction chamber for primary combustion is depleted, leaving exhaust lacking oxygen. That said, the SAIS reintroduces oxygen rich air into exhaust allowing unburned fuel to continue burning before being expelled into the atmosphere.
What is the purpose of the Secondary Air Injection System?
This is particularly true on cold starts for two reasons. First, for more reliable starting the fuel/air mixture is going richer in fuel. Second, it takes a couple of minutes for the engine and catalytic convertors to get up to operating temperatures. In combination, these two factors increase amount of unburned fuel after a cold start. Thus, the purpose of the Secondary Air Injection System; to reduce increased emissions of hydrocarbons and carbon monoxide that is present due to cold start conditions .
How does a SAIS work?
This process is carried out by the various components of the SIAS as follows. On cold start ignitions the Air Injection Drivers will command the Air Switching Valves to open and the Air Pumps to, you guessed it, pump air. The air is sent through the Air Switching Valves and injected into exhaust manifold up stream of the catalytic converters. When the air/oxygen provided by the SAIS mixes with the post combustion exhaust oxidation occurs. Now replenished with oxygen hydrocarbons and carbon monoxide can oxidize into less harmful emissions like water and carbon dioxide. The continued burning of fuel also increases the temperature of exhaust gas which helps the catalytic converters heat up to operating temperature quicker. It typically takes 30 -90 seconds and once operating temperature is achieved air from the SAIS is no longer needed and the SAIS stops operating. The Air Pumps turns off and the Air Switching Valves close. If the Air Switching Valve does not close than exhaust can leak back into the SAIS which can lead to additional issues.
What is the code for second air injection?
P0410 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
Why is my air injection pump so noisy?
The air injection system pump may be noisy from bad bearings.
Why does my car fail emission testing?
The air injection pump system is to help lower the emissions coming out the exhaust and can cause the vehicle to fail emission testing. The check engine light being on causes the vehicle to fail emission testing. The air injection pump should not cause any drive symptoms other than a Check Engine Light.
How long does it take for O2 sensor to go below 150 mV?
Monitors the O2 sensor pid on a scanner to see if the sensor reacts when the air injection pump is activated, the sensor should go to below 150 mv within 3 seconds
What is the code for O2 sensor?
P0410 is an OBD-II generic code that the engine control module (ECM) detected the engine O2 sensor did not detect an increase in the O2 level in the exhaust when the air injection system was commanded on during an active test.
Does an air injection pump cause a check engine light?
The air injection pump should not cause any drive symptoms other than a Check Engine Light.
Can you check for proper intake air flow into an air injection pump before replacing it?
Not checking for proper intake air flow into the air injection pump before replacing the pump for no air pumping out of it
What happens if you have a problem with your secondary air injection pump?
If there is ever a problem with your secondary air injection pump, then more hydrocarbon pollutants will be in the fumes which come out of your tailpipe. You won’t realize this until you receive an emissions test.
How to tell if secondary air injection pump is bad?
One of the early symptoms of a bad secondary air injection pump is the Check Engine warning light turning on. The engine control unit can automatically detect when the secondary air injection pump has a problem.
What is secondary air pump?
What Does a Secondary Air Pump Do? The secondary air injection pump (also referred to as a smog pump or SAI pump) is responsible for lowering the number of carbon emissions that come out of the tailpipe of a vehicle. This is necessary since a vehicle engine is never 100% efficient in the combustion process.
Why is my air pump not accelerating?
Poor acceleration could be caused by several mechanical issues, but a bad secondary air injection pump is certainly one possibility. A failed emissions test in conjunction with weak acceleration is a decent indicator that it is the pump’s fault.
What to do if your air pump is stalling?
If you’ve already experienced engine stalling, poor acceleration, and a check engine warning light, then you need to have the secondary air injection pump checked out immediately . If it is proven to be the problem, have it replaced by a certified mechanic.
What causes a bad air to fuel ratio?
A faulty secondary air injection pump will cause problems for the air-to-fuel ratio in your internal combustion engine. If this ratio is too lean (not enough fuel), then your engine will have trouble generating speed whenever you step on the gas pedal.
Can you fail an emissions test if your air pump is bad?
Not only does this spell trouble for the environment, but it also spells trouble for whenever you get an emissions test. If you happen to live in a state which requires emissions testing, you will fail the test if your secondary air injection pump is bad.
What is secondary air injection?
What is a secondary air injection system. A secondary air injection system is part of a vehicle’s emission system. It’s used to reduce emissions during cold starts when the engine is running on a rich fuel mixture to overcome the cold quenching effect of cold combustion cylinders. Unfortunately, the rich fuel mixture doesn’t burn completely causing ...
What are the components in a secondary air injection system?
A secondary air injection system requires an AIR pump and one-way switching valves. The valves allow pumped air to flow into the exhaust stream or directly into the catalytic converter while preventing exhaust backflow through the pump when it’s not operating. The air switching valves can be operated by vacuum motors or solenoid valves.
How does the secondary air injection system and AIR pump work?
During a cold startup the PCM monitors the engine coolant temperature sensor and upstream and downstream oxygen sensors to detect whether to turn on the AIR pump. If the engine temperature is below 195°, the PCM determines the engine is “cold” and commands a rich fuel mixture.
What goes wrong with an AIR pump and AIR switching valves?
Any time a gas is compressed, it heats up and outside air is no exception. In humid conditions, the compression can cause the humidity in the air to condense against the cold metal pump structure and cause internal corrosion. The water can also corrode and impede the operation of the AIR switching valves. Continued corrosion can cause the AIR pump and switching valves to seize, at which point they must be replaced.
What is the air pump in a car?
vehicles use an electric AIR pump . The AIR pump and AIR switching valves are controlled by the PCM. During a cold start, the PCM may wait until the catalytic converter reaches light off temperature, determined by activity readings from the downstream oxygen sensor, and then activate the AIR pump to force outside air into the exhaust manifold or directly into the catalytic converter.
How does the PCM activate the air relay?
The PCM activates the AIR relay by grounding the control coil in the AIR relay. By grounding the control coil, the PCM expects to see a voltage drop to almost 0. If it doesn’t get that results, it sets a P0412 secondary AIR circuit malfunction if it finds one. The problem can be a blown fuse, bad relay or an open circuit.
How does an oxygen sensor work?
The oxygen sensors have internal heaters that bring them up to operating temperature quickly. Once the catalytic converter reaches light off temperature, the PCM begins to receive downstream oxygen content signals. At that point it operates the AIR pump relay to switch power to the pump (electric pump draws high current, so it needs a relay to switch the power). At the same time, it commands the switching valve to open and allow the pumped air to enter the exhaust stream.
How to fix a leaking air pump?
To get rid of this error code, you can do the following: 1 Replace both the air pumps and the one-way check valve 2 Try and clean the air pump and test it. The one-way air check valve must be replaced as well 3 Replace the inlet hose of the air pump 4 Replace the fuse of the air pump (you can find it under the hood)
Why does my air pump freeze?
During colder seasons, particularly in seasons with higher humidity, water can be excessive and may partially fill the air pump and freeze there. Obviously, if the PCM triggers the pump on, the pump will not turn, and this results to overloading of the circuit and “pop” the fuse.
Why does my exhaust pump have a one way check valve?
This code is actually pretty common, and it’s usually caused by air pump pressure escaping to the outside if any of the air pipes that lead to the combustion valve is damaged or lodged after changing the spark plug.
What to do if you don't hear the air pump motor start?
If you DON’T hear the air pump motor start – Inspect the SAS Air Pump and relay.
Where is the fuse on an air pump?
Replace the fuse of the air pump (you can find it under the hood )
Can you replace an air pump in a Tsb?
TSB will require replacement for the air pump and the installation of a new secondary injection hose. Simply replacing the air pump will not always solve the problem, as a matter of fact, it may come back over and over again. When replacing the air pump, it is important to clean the hoses and replace he one-way check valve.
What happens when an air pump freezes?
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
Where is the fuse on an air pump?
Replace the AIR pump fuse (found under the hood)
How to check secondary air system?
Before testing, ensure that the engine is cold and the vehicle has not been driven for at least 10 hours. Start the engine and measure the voltage at the O2 sensor with a scanning tool. If the voltage drops below 125 millivolts (0.125 volts) after about 10 seconds, this means that the secondary air system is functioning properly. However, if the voltage does not drop, this is an indication that the secondary air system is defective.
Where is the air injection pump located?
Open the hood of the vehicle and locate the air injection pump. It is located at the front of the engine, with the serpentine belt surrounding it . Make sure there is a belt routing diagram under the car’s bonnet so that you know how to re-attach the serpentine belt.
How Serious is the P0410 Code?
Medium – If the issue is only leading to a Check Engine Light, it’s unlikely to cause any major problems right now. However, the emissions system isn’t running as it should and you could fail an inspection test.
What is an OBD2 scanner?
The OBD2 scanner is able to read the information stored in the on-board diagnostic system. You can either purchase the basic code reader, which provides only specific information related to the code, or you can purchase the advanced scanner, which also allows monitoring and recording of live data.
How to remove serpentine belt from a pump?
Remove the serpentine belt with a ratchet and disconnect any hoses from the pump.
How much does it cost to replace an air pump?
The average cost of replacing the air injection pump is between $300 and $400 depending on the car model and brand. Labor costs are around $100, while the part itself costs around $220 to $260.
What happens if you ignore P0410?
The trouble code P0410 does not cause serious problems with the driving behavior, but it drastically reduces the fuel consumption of the car. In addition, your car will start emitting dangerous pollutants. If the error code is ignored for too long, both the car’s engine and exhaust system may be damaged.