EA113 Diverter Valve Diagnosis and Replacement

How to Change the Cam Follower on Your EA113 Engine

Diagnosing and replacing your 2.0T TSI Turbo Recirculation (DV) Valve

On the EA113 engine platform one of the most common faults that occur are faults derived from a failed recirculation diverter valve (DV) / Blow off Valve (BOV). The first ones made were faulty and Volkswagen AG (VAG) have since made several revisions to this part due to it constantly failing. These valves were used on both the KO3 and KO4 turbos and its purpose is to release boost once the throttle has been shut.

The original valves were only designed to support stock power and even then, they fail regularly. The EA113 is a platform that is used in VAG hot hatches, so a lot of these vehicles have increased power by ECU remapping or additional performance parts. Once tuned the early generations of the diverter valve will often fail as they are only capable of 1 bar of pressure.

Symptoms of a failed diverter Valve:

When the diverter valve fails, it will be because the diaphragm has split and is unable to hold the pressure. The first thing you may notice is the vehicle has an intermittent sudden loss of power. Below are some common symtoms and associated fault codes:


  • Intermittent loss of power under boost conditions
  • Performance noticeably reduced
  • Excess noise from the intake upon acceleration
  • Vehicle is in limp mode
  • Fault code P0234 – Turbocharger Over boost
  • Fault code P0299 – Turbocharger Under boost


The symptoms are like a failing turbo, so it is important to have this diagnosed early to save any further damage.


Tools required to replace your diverter Valve:

  • Capable diagnostic scanner
  • 5mm HEX/Allen


Parts required to replace your diverter Valve:

As mentioned earlier in our guide, the early generations of the diverter valve often fail and are not suitable for tuned vehicles. The later generations diverter valve are different and made of different material capable of exceeding the 1 bar of pressure and withstand more use before failing. Our suggestion is to go with the following revisions:

  • 06H145710D
  • 06F145710G

How to replace your diverter Valve:

Step 1: Remove diverter Valve  

The job of replacing the diverter Valve on the KO3 variants is slightly different than the KO04 Edition 30 Golf GTi, Leon Cupra & Audi S3 8P. They are in different places.


  • Get vehicle onto ramp and make sure it is level. Once the vehicle is safely secure and level you will now be ready to start the service.
  • The diverter valve is located to the rear of engine and is bolted straight on the bottom side of the turbo
  • You can access the diverter valve just above the driveshaft
  • Use 5mm HEX/Allen to remove all 3 bolts
  • Remember the rotation of the diverter Valve
  • Gently wiggle the diverter valve off
  • Inspect the diaphragm for any tears or splits


  • The diverter valve is located to the top front side of the engine
  • Use 5mm HEX/Allen to remove all 3 bolts
  • Remember the rotation of the diverter Valve
  • Gently wiggle the diverter valve off
  • Inspect the diaphragm for any tears or splits

Step 2: Installing the new diverter Valve

Once you have remove the diverter Valve you are now ready to install the new Revision D / Revision G diverter valve.

  • Place diverter valve in the same rotation you remove it
  • Use 5mm HEX/Allen to replace all 3 bolts
  • Using diagnostic tool clear all fault codes
  • Test drive vehicle
  • Scan vehicle to make sure no codes have come back

For any more information feel free to give us a call and we will be happy to assist with any enquiries you may have.

Team JCR
Message us on here or
0113 260 9065

Using dealer level diagnostic tools, here at JCR (Leeds) Ltd we service the ZF6  & ZF8 transmission with OEM parts to dealer specification. Servicing ZF Transmissions for customers with vehicles from the West Yorkshire area:

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