Audi A3 Saloon VAG codes

[JimJnr72]

Hi.  I’ve got an A3 saloon s line 1.6 Tdci ultra.  I’m using an ancel vd500 code reader.  It is coming up with the following unidentified codes, and I can’t find any reference online:

004B06

004B1A

00137B

Can anyone help identifying them?

[Steve Q]

On 10/17/2022 at 4:26 PM, JimJnr72 said:

Hi.  I’ve got an A3 saloon s line 1.6 Tdci ultra.  I’m using an ancel vd500 code reader.  It is coming up with the following unidentified codes, and I can’t find any reference online:

004B06

004B1A

00137B

Can anyone help identifying them?

I've had a look too but struggling to find anything. 

[JimJnr72]

On 10/22/2022 at 3:00 PM, Steve Q said:

I've had a look too but struggling to find anything. 

The guy I bought the car from said that it was the MAF sensor that was throwing up the engine management light, but I’m not sure if those code tie into that.  There’s no codes coming up in the odb2 part of the reader.

The codes I listed were in the VAG section under engine.

Edited October 25, 2022 by JimJnr72

[JimJnr72]

Update.  I updated the library on my code reader.  It’s insufficient flow on the egr.  I notice there are two parts to the egr, the valve and the cooler.  I can see the vacuum valve at the back of the engine.  Is it straight forward to do?

[Steve Q]

Egr are common to fail on modern diesel's. You're better off buying genuine Audi one as aftermarket ones can be dubious quality.