If you drive an Audi, you’re used to a smooth drive in a luxurious vehicle — so you’re likely to be frustrated if that smooth ride is interrupted. While Audis are very reliable vehicles, like any car they can develop problems over time. One of the parts that can cause issues in your Audi when it starts to go bad is the EGR valve, which recirculates gasses through the engine intake to reduce emissions and get you more mileage out of your gasoline. Below, we’ll take a look at signs of EGR valve failure and what to do when you notice those symptoms.

Common Warning Signs of a Failing EGR Valve

  • Check Engine Light: This is one of the signs of a problem that any Audi owner hates to see — the check engine light popping on the dashboard. It can indicate any number of things, but one possibility is the EGR valve. If your check engine light comes on, have it checked by a mechanic who can interpret the error code the light will give them.
  • Rough Idling or Stalling: A faulty EGR valve can also cause rough idling and even stalling. When the valve is stuck open, it lets exhaust gas flow freely into the engine, which can alter the carefully managed fuel to air ratio and make the engine run poorly. On the flip side, if the valve is stuck closed, it can lead to a nitrogen oxide buildup with similar results.
  • Decreased Fuel Efficiency: This is one everyone hates, with today’s gas prices! If you notice you’re spending more at the pump, it may be time to take a closer look at your Audi’s EGR valve. When the valve isn’t able to recirculate the exhaust gasses properly, the engine has to work harder, which isn’t just adding more wear and tear to the engine — it also makes it consume more fuel.
  • Pinging or Knocking Sounds: Hearing unusual sounds from the engine is never a good sign. If you hear pinging or knocking, it can be the EGR valve at fault, caused by the combustion process being interrupted by the air-fuel ratio being off.
  • Increased Emissions: Since the EGR valve is a crucial part of the emission control system, a failing valve can lead to increased emissions. If your vehicle fails an emissions test or you notice a stronger than usual smell of exhaust, it might be time to check the EGR valve.
  • Poor Acceleration and Performance: A faulty EGR valve can cause your Audi to struggle with acceleration and overall performance. If your vehicle feels sluggish or lacks power, especially during acceleration, the EGR valve could be the issue. This happens because the engine isn’t receiving the correct mixture of air and fuel.

How to Address EGR Valve Issues

Knowing the warning signs is a great first step, but what should you do if you suspect your car is having EGR valve issues? Step number one is always to have your suspicions confirmed by a professional. At Howland Autohaus, we have the tools and expertise to run the diagnostic checks needed to determine if the EGR valve is indeed failing.

That said, sometimes the valve can be struggling not because it is damaged but because it needs a good cleaning. The valve can collect carbon deposits over time, which can cause the valve to get stuck or malfunction. Cleaning the valve can sometimes get it back to working the way it should.

If cleaning the valve doesn’t resolve the problems, then it likely needs to be replaced. As simple as changing out a valve sounds, it is surprisingly complicated and should only be completed by a professional.

Audi EGR Valve Inspection

Bring Your Audi to Howland Autohaus

Audis require specialized care — not every mechanic will know about their intricate engineering and specific requirements. At Howland Autohaus, we specialize in Audis, so you can always rest assured that your car is getting the best care possible. If you suspect EGR valve issues in your Audi, we’re here to help.

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Schedule an appointment with us today, and let Howland Autohaus keep your Audi in peak condition.