In these cases, the parts most likely just need to be cleaned. Disconnect the harness going to the A. This should activate the pump. Refer to the illustration above. I am assuming that at 60,000+ miles that something has outlived it's useful life and needs replacement. If these codes are present, diagnose them before attempting to diagnose the P0411.
All other marks are the property of their respective holders. Then, apply Medium-Strength Threadlocker Blue , U. Definition Secondary Air Injection is actually an emission control that uses a pump to send fresh outside air to the to the exhaust manifolds or exhaust ports during cold engine start up, or when the engine is in open loop and pre-catalytic converter during in closed loop. The also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Using a 15 mm standard length offset box end wrench, loosen the bolt. Refer to the illustration above. P0411 Description An air pump is used on the vehicle to lower tail pipe emissions on start-up.
Repair the cause of the short and retest. You'll find a lot of links to sites with the codes. Pump or Pump Relay fault codes. In many cases, the driver will not notice anything out of ordinary with P0411 with the exception of the Check Engine Light being present. If it is unable to hold the vacuum or the valve is unable to flow upon application of vacuum, then you need to replace your cutoff valve. Please let us know happens so it will help others. Misdiagnosis occurs when this code is diagnosed when it is a stored code, especially while other codes are active.
On the Jetta, the hissing and trouble code were caused by a cracked vacuum hose. Need help with a P0411 code? It should now read close to zero volts. Once located, visually inspect the connections and wiring. Remove the ignition coil from the engine. There may be an update, or known fix put out by the manufacturer that can save you from wasting time and money. Pull the connectors apart and carefully inspect the terminals the metal parts inside the connectors.
DcDisturbed, you can get Autozone to pull the codes for free. Do you have any more suggestions? These coatings affect fastener torque and joint clamping force and may damage the fastener. It operates by adding air to the exhaust system which aids in the burning of environment harming tailpipe emissions. If both are present, then use a jumper to the battery feed to Air pump the feed circuit through a fused jumper. If the pump runs, find another relay identical to the one removed from the A. To say the least, all three service centers are completely stumped. If this difference is less than 8 kPa, proceed to step number 7.
Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Applicable Vehicles 1998 - 2000 New Beetle ® with 2. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The sensor returns a certain amount of the reference voltage based upon the amount of pressure changes within the exhaust system. With some vehicles, a slight engine hesitation upon acceleration may be noticed. What are the common causes of code P0411? Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. Here is where it is located.
The sensor is usually part of the Secondary Air Check Valve. 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. Disconnect cylinder number 6 ignition coil engine harness connector. Remove the retaining bolt M10 X 1. I didn't do anything to it.
I remembered a similar situation with a 1999 Jetta ® that we solved pretty easily. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. The only other thing I have not changed were the hoses. Chris had called me a week prior stating that the car was making a hissing noise and that the check engine light was on. These scan tools allow access to data that is live from the sensors and solenoids.
With the hooked up, monitor the A. Cold start the vehicle and observe the front O2 sensor from the scan tool data stream. 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. Once the bolt is removed from the engine cylinder head, the bolt will stay attached to the Air Distribution Manifold and Retaining Bracket. Always check with your Parts Supplier for the latest parts information. Pump Relay by taking a jumper wire and plugging one end into pin 30 and one into pin 87. Technicians use this information to test the air injection system and determine which part is not functioning as designed.