The fault code p0411 is a Secondary Air Injection System Incorrect Flow Detected And the p0304 fault code is a misfire detected on cylinder 4 possibly a coil pack maybe a plug Apr 15, 2015 Hello Please read this carefully. Interested in stuff seen in the videos or the tools and toys Eric O. I will include a troubleshooting tree at the bottom. Later, when the is running a purge control valve opens allowing vacuum to siphon the fuel vapors into the engine. Refer to Altitude vs Barometric Pressure. This information is stored in the Freeze Frame buffer. Give some more info and I'll help you through this.
Some models require multiple ignition cycles or drive cycles for a malfunction indicator lamp to be illuminated but a code should be stored on the initial failure. The control module supplies the internal pressure sensor with a 5-Volt reference, an electrical ground, and a signal circuit. The monitors the secondary air injection system and detects malfunction using a pressure sensor located on the air switching valve. The observes the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system. The videos take real time to create and pull us away from real work that pays our bills. What causes the P2433 code? South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.
The numbers below refer to the step numbers on the diagnostic table. Nov 13, 2015 The first fault code do you mean p1296 if so that is a cooling system malfunction you will need to check the temperature sensor. Common Problem One of the more common problems with this type of secondary air injection system and it is not restricted to Subaru cars, many other makes of car also have similar secondary air sytems fitted is that the secondary air pump is pumping often damp air from the atmosphere directly through the secondary air valves and into the exhaust when the engine is cold. The air pump and the air switching valve are observed by the Engine Control Module and are used to detect malfunction in this system. If the electrical switching capacities of the alarm contacts are exceeded or not reached, a relay is to be used to provide an appropriate current rating. The purpose of this is to reduce the amount of harmful pollutants that the exhaust emits into the environment. The high contact pressure and the selection of various contact materials result in reliable and cost-effective solutions, above all when high currents have to be switched.
©Subaru 4 you Ltd Subaru Cosworth Head gasket Subaru Cometic Head gasket. Testing the one way check valves is also critical to making a thorough diagnosis. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. A corresponding control unit is always required for operation. The solenoid valve is closed, this is p2430 and p2440. Common Misdiagnosis Secondary air injection pump replacement, without fabricating a water drain on the pump housing, may lead to repeated pump failure. The solenoid valve is closed.
Here is the diagnostic chart for P2431. As a result of the high actuating forces, diaphragm pressure gauges are particularly suitable for connection of electric alarm contacts. Jul 15, 2011 P0411 Secondary Air Injection System Incorrect Flow Detected p0411 is a generic code, probably a vacume leak,vacume hose broken check this first, check the air pump turn on the car but it needs to be cold, you should hear a high pitched whine, this is the air pump running,there are 2 hoses one suction one blowing thishose should be going from the air pump to the air cleaner disconnect that and see what the volume is should be pretty strong. Special corrosion resistant materials protect the wetted parts in service with chemically aggressive media. Inductive electric alarm contacts have an almost unlimited service life, as the signal is switched without physical contact. The map sensor and secondary air pressure sensor look the same and have the same connector but they do not work the same. Testing them prior to making a diagnosis is important to ensure a proper diagnosis.
In fact, the leak can be from a hole as small as 0. YourMechanic offers certified mechanics who will come to your home or office to diagnose and repair your vehicle. The first time the diagnostic fails, the control module stores this information in the Failure Records. The control module records the operating conditions at the time the diagnostic fails. Units with inductive contacts may be operated in areas with potentially explosive atmospheres, assuming compliance with existing specifications. If more than 0 volts, test the low reference circuit for high resistance, If the circuit test normal, replace the control module.
Please rate this response , and let me know if ya need more help! If the circuit test normal, replace the control module. Inspect the wiring harness and components for an intermittent condition. Faulty one-way check valves are a common diagnosis for the P2433 trouble code so neglecting to test them could lead to a misdiagnosis and multiple secondary air injection pump replacements. Several symptoms of the P2433 trouble code could make driving conditions extremely hazardous. Just ship it here: South Main Auto Repair 47 S.
The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. Common Causes The most common causes of this code being stored occur in cold weather conditions. Normal secondary air function occurs. Failing to do so could cause multiple secondary air injection pump failure. The secondary air injection system uses ambient air, which is pumped into the engine exhaust, to reduce emissions. Replace the relay if tapping gently on the relay or wiggling the relay causes a change in the relays operation. The P2433 diagnostic trouble code is considered serious.
This info directly relates to the code you are having. If the fuse is not blown then the relay could be the culprit. You working on things from yester year --not todays techology Nov 26, 2012 What engine? The part number for the secondary air pressure sensor is 07C-906-051 and the map sensor part number is 03C 906 051 the map sensor is located down by the throttle body and the sec air pressure is located in the hose next to the battery. P2433 Volkswagen Description To accelerate the activation of catalyst when warming up the engine, the air injection system pumps the secondary air to the exhaust manifold by pressure. Magnetic snap-action electric alarm contacts are predominantly used in adverse operating conditions. The secondary air is supplied by the air pump and it is pumped to the exhaust manifold through the air switching valve. Thanks for your support of our channel!! Symptoms Symptoms may include abnormal noises from the secondary air injection system, engine hesitation upon acceleration, the engine may stall at startup or idle, a stored code, and eventually an illuminated malfunction indicator lamp.
The secondary air injection system allows fresh air into the exhaust system. In all 3 phases, testing is accomplished by comparing the measured pressure against the expected pressure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. Open process connections ensure that the gauges are easy to clean with highly viscous or crystallizing process media, thus guaranteeing process reliability. The diaphragm system makes the gauges extensively insensitive to vibration or jarring, and produces a high level of overpressure protection and actuating force. It is common for this sensor to go bad and I have seen outside shops replace this sensor with a map sensor and the came will come back in a few days with the same problem.