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 fix a secondary air injection system malfunction?
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 does secondary air injection system malfunction mean?
Code P0410 is the result of the Engine Control Module (ECM) indicating a malfunctioning Secondary Air Injection System. This happens when the O2 sensor does not accurately detect the changes in the O2 level of the exhaust while the air injection system is functioning.
Can I drive without secondary air injection?
The system is critical to help cars achieve government emissions standards. So, the law says you need a secondary air injection system. Which begs the question: Does a car need a secondary air injection system to run? Strictly speaking, no, it doesn’t.
Can you drive with a broken secondary air pump?
Can You Drive With A Bad Secondary Air Pump? A bad air pump can be hazardous to your driving safety even if you fail a smog test. It is possible that reduced engine performance and driveability could result in your vehicle being unsafe.
How do you know if your secondary air pump is working?
The secondary air pump has to start audibly after a cold start of the engine. Start vehicle engine. If the power supply of the secondary air pump is fine, but the secondary air pump runs with a scraping, whistling or scratching noise or not at all, the secondary air pump is to be replaced.
How do you clean a secondary air injection pump?
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.
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.
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.
What could cause a P0410 code?
The trouble code P0410 occurs when the passive testing of the air injection pump is inconclusive or fails. Once this happens, the ECM will demand an active test. If the O2 sensor can’t register higher oxygen content in the exhaust in the first three seconds, the code will be triggered.
How much does a secondary air pump cost?
The average cost for air pump replacement is between $465 and $554. Labor costs are estimated between $77 and $97 while parts are priced between $388 and $457.
How do I fix code P0491?
What repairs can fix the P0491 code?
Replacing any damaged wiring, connectors, or other electrical components.Replacing the secondary air injection pump.Replacing the pump’s one-way check valve.Repairing or replacing any damaged vacuum hoses or fittings which could be causing a vacuum leak.Replacing pump fuses.
How do I know if my smog pump is bad?
One of the first symptoms of a bad or failing smog pump is a rough running engine. When a smog pump fails the finely tuned air-fuel ratios can be upset, and it will negatively affect the performance of the engine. The engine may have trouble idling, and may drop in engine speed, or stall when the pedal is pressed.
What does a secondary air injection check valve do?
It functions as a one-way valve, allowing the air to pump through into the exhaust, while preventing the exhaust fumes from leaking into the secondary air injection system.
What does an air pump check valve do?
The AIR check valve prevents reverse exhaust flow from entering the AIR system. If the check valve fails, hot exhaust gases can sneak back into the system, damaging components, such as the air pump and air management valves.
How important is a secondary air injection pump?
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.
What is a secondary air injection sensor?
A secondary air injection pressure sensor is used by the Powertrain Control Module or PCM to monitor the air flow from the air injection pump. The PCM supplies 5 volts to power the sensor and another 5 volts as a reference or signal while finally supplying the much needed ground on the third circuit.
What does a secondary air pump do on a vehicle?
The secondary-air pump draws in ambient air and injects it into the exhaust manifold downstream of the exhaust valves. There is a separate integrated air filter if the air is not drawn in from the intake system but rather directly from the engine compartment.
