EGR valve cleaning

[m8gic]

Hello

I have tried to search for a guide on how to clean the EGR valve on Audi A5 2.0 TDI, can someone point me in the right direction or advise please?

[Crasher]

There are variations, what is the VIN and the fault code?

[m8gic]

Hi, the fault code is P0401 - EXHAUST GAS RECIRCULATION flow insufficient detected

tHE CAR IS uk SPEC AUDI A5 2.0 177bhp model.

The mileage is 150k, however the EGR cooler was doen at 105k, not sure if the EGR was done at the same time

[m8gic]

Also just to add, I had the car 1 month, there have been a few occasions when the EML turns off, then comes back on a few days later so seems like some intermittent issue.

[Crasher]

I need the VIN for accuracy, do you know the part number of what was fitted?

[m8gic]

Hello the VIN number is WAUZZZ8T1CA040616

Looking at the invoice it does state the EGR cooler was changed, does not actually mention EGR so i'm now wondering if this has ever changed.

The EML does turn off ocaasional after a few days driving then go back up.

Are there any decent additives/ Sprays I can try first in the fuel tank or speak into the EGR?

Many thanks

[Crasher]

The VIN look up system is down, remind me tomorrow

[m8gic]

HI, can you check the VIN if the system is back online?

Thanks

[Crasher]

The unit used on this engine, the CGLC, is very prone to failure and aftermarket versions notoriously unreliable, you could do with finding out what was fitted. The revised part from Audi is 03L 131 512 DT and they retail at £502.80

[m8gic]

Hi, is this quite simple to dismantle or take 1 pipe away to spray EGR cleaner?

I have driven past 3 months and not in limp mode or anything

I have a cheap scanner and took some live data

EGR Min 1500
EGR Max 64736

Test Value 64432 (Failure)