Misdiagnosis occurs when this code is diagnosed when it is a stored code, especially while other codes are active. The start-up coolant and ambient air temperatures have to be in the specified operating range. Remove the air cleaner outlet resonator. If these codes are present, diagnose them before attempting to diagnose the P0411. Sure enough, the vacuum hose from the brake booster to the secondary air inlet valve had broken in half. Replacement fasteners must be the correct part number for that application.
While the relay is removed from its socket, momentarily bypass the A. The enables both circuits simultaneously when Air system operations id desired. How serious is the P0411 code? Hey Rjestes, What happens is the diaphragm in the control valve goes bad and allows air to be injected into the exhaust system at all times which can make the car backfire. It just plugged into the connector under the dash and it gave the trouble code, plus a digital readout stating what the code meant. Diagnose current faults first, in the order in which they are stored.
Refer to the illustration above. I remembered a similar situation with a 1999 Jetta ® that we solved pretty easily. He is also a graduate of the De Anza College Automotive Technology Program, with 20 years of independent shop and parts store experience. Next, see if there are any other diagnostic fault codes. This can lead to a false diagnosis and a waste of time and money. When she got home I took my new scan tool out and plugged it in, it's not a nice snap on but this thing is pretty cool for a cheapie.
There may be an update, or known fix put out by the manufacturer that can save you from wasting time and money. I didn't do anything to it. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. What are the common causes of code P0411? If it does not, the A. Plug the new relay into the socket for the A. Need help with a P0411 code? Pump Relay on your particular vehicle.
Inspect for damaged vacuum hoses at secondary air inlet valve 2 to Combi valve 20 and vacuum hose 3 from secondary air inlet valve 2 to brake booster vacuum check valve. The light will remain on until normal operation occurs or repairs are performed. In cases where carbon buildup has clogged secondary air injection system components, these parts may be able to be cleaned and unclogged. Refer to the illustration above. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. The sensor is usually part of the Secondary Air Check Valve. With the hooked up, monitor the A.
It operates by adding air to the exhaust system which aids in the burning of environment harming tailpipe emissions. It is either electric or turned by the drive belt. But yea I agree with you that they are missing something. A professional level scan tool is needed to properly diagnose the secondary air injection system. Tighten the bolt until the clamp load of the bolt secures the Air Distribution Manifold and Retaining Bracket to the back of the engine cylinder head. If after you jumper the Air pump feed circuit the pump activates, then you have a defective Air pump. You feel it is a voltage issue.
Replace it to fix to problem. If voltage ground is present, but pump is still unable to run, then you may have a bad Air pump. Repair the cause of the short and retest. Disconnect cylinder number 6 ignition coil engine harness connector. P0411 Description An air pump is used on the vehicle to lower tail pipe emissions on start-up. Common mistakes when diagnosing the P0411 code The most common mistake is made when unneccessary components are replaced within the air injection system - usually when parts are just clogged but have not actually failed. An electric air pump draws fresh air and pumps it into the exhaust in order to accelerate catalytic converter operation.
From all of their experiences they told me that changing the air filter, the secondary air injection check valve, the secondary air pump, the purge valve, and changing all fuses and relays along with all the voltage and connectors checking out, they find it hard to believe I'm still throwing the P0411 code. What causes the P0411 code? Remove the retaining bolt M10 X 1. System Pressure Sensor Signal input wire. Applicable Vehicles 1998 - 2000 New Beetle ® with 2. Pull the connectors apart and carefully inspect the terminals the metal parts inside the connectors.