335d p20ee code, SCR metering valve cleaning bmw 2011 335...

Q: 335d p20ee code, SCR metering valve cleaning

asked by on October 24, 2017

How hard is it to clean the SCRA metering valve? My ses light is on and the code is p20ee and I was told this valve is probably clogged with urea crystals.

My car has 113000 miles.
My car has an automatic transmission.

The valve is accessible but testing, which is performed coincident to cleaning, requires a BMW specific bi-directional scan tool. The scan tool is used to remotely actuate the valve to see if it is even working. There are other causes of the trouble code that you are writing in about, namely a faulty NOx sensor, issues with the diesel exhaust fluid storage and the selective catalyst reduction (SCR) catalyst itself could be degraded. To obtain a quote for both cleaning and inspection, please use YourMechanic’s service request page. If you have further questions, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Engine RPMs drop suddenly from 2500 to 500-1500 RPM on 2013 BMW 650i

Thanks for writing in about your 2013 BMW 650i. The symptoms sound similar to a vehicle with a throttle position input error or a major boost leak in a forced induction vehicle. To verify this, I would recommend having a...

I'm just trying to find out how much would it cost me to replace a freeze plug on a 2006 BMW 3 series

The labor for replacing a freeze plug may vary quite differently depending on the specific location of the freeze plug being replaced. As you know, there are many freeze plugs in the motor in various locations, some of which are...

When should I get my tires changed?

Tires generally should not be left in service on a car for more than 10 years after the date of manufacture molded onto the tire sidewall. Once tires reach 4/32 inch of remaining tread depth, it is wise to start...

Related articles

5 Comfortable Sports Cars Your Parents Won't Complain About Riding In
The most comfortable sports cars combine high performance with a smooth ride. Options include the Alpina B6, Audi S8 Plus, and Mercedes-AMG S65.
A Buyer’s Guide to the 2011 Cadillac STS
Big, Big, bold and beautiful, the 2011 Cadillac STS is a full-size, four-door sedan that promises more than ample room for the entire family, as well as the power and performance you expect from the automaker. 2011 marked the final...
A Buyer’s Guide to the 2012 BMW X5 xDrive35d
The The 2012 BMW X5 xDrive35d offer contour seats and smooth acceleration. The suspension offers a smooth ride to the driver and passengers in the vehicle, even for long road trips. It can handle tight curves without any problem while...