P0403 - EGR Code, but which part actually needs replacing?

[Dziire]

Hello,

Audi A3 8P Sportback / 2009 / 2.0 TDi 138/140 BHP / CBAB Engine

So after last night when I hit the underside of my car with a curb I thought I began to get an issue due to it, turns out it's because I turned the car off and on multiple times to assess damage and the glow plug symbol started flashing along with limp mode.

Gave it a scan and got back P0403 which is the EGR valve, I know it fills with carbon and needs replacing however I cannot find enough resources to tell me which part.

Searching for the EGR valve on my CBAB engine brings results for a part in the front of the engine bay, small in size and easily replaced and a longer piece in the back that I know is probably about 7 hours of labour. 

 

Does anyone know what is typically replaced when this code occurs? £1,000 of parts and labour is going to bring a tear to my eye for a £3,000 car.

 

Cheers

Edited October 26 by Dziire

[Dziire]

Just to add, I've just done a 40 mile round trip just to give the DPF a blast and I haven't had an issue today. But I guess getting that first one is a warning of what's to come?

[Stevey Y]

3 hours ago, Dziire said:

Hello,

Audi A3 8P Sportback / 2009 / 2.0 TDi 138/140 BHP / CBAB Engine

So after last night when I hit the underside of my car with a curb I thought I began to get an issue due to it, turns out it's because I turned the car off and on multiple times to assess damage and the glow plug symbol started flashing along with limp mode.

Gave it a scan and got back P0403 which is the EGR valve, I know it fills with carbon and needs replacing however I cannot find enough resources to tell me which part.

Searching for the EGR valve on my CBAB engine brings results for a part in the front of the engine bay, small in size and easily replaced and a longer piece in the back that I know is probably about 7 hours of labour. 

 

Does anyone know what is typically replaced when this code occurs? £1,000 of parts and labour is going to bring a tear to my eye for a £3,000 car.

 

Cheers

Hi I think you are over thinking this, the first thing I would check is the point of impact to make sure that there are no bits of squashed wiring, the code you have is for the main part of the EGR Valve which is at the back of the engine, the part you referred to at the front is the throttle valve not EGR and to change the rear part is about 4hrs labour and £150 for the part.

Steve.

[Stevey Y]

5 minutes ago, Dziire said:

Just to add, I've just done a 40 mile round trip just to give the DPF a blast and I haven't had an issue today. But I guess getting that first one is a warning of what's to come?

Hi if you add a good quality egr cleaner to the fuel that may well keep the problem at bay

[Dziire]

10 minutes ago, Stevey Y said:

Hi I think you are over thinking this, the first thing I would check is the point of impact to make sure that there are no bits of squashed wiring, the code you have is for the main part of the EGR Valve which is at the back of the engine, the part you referred to at the front is the throttle valve not EGR and to change the rear part is about 4hrs labour and £150 for the part.

Steve.

Yeah perhaps, I'll take another look. I was performing a U-Turn and mounted a curb (a left over pedestrian crossing from roadworks in the middle of the road), the loudest thud was on the inside of the rear passenger side wheel, so around the exhaust area.

That specific code however, it originates from the EGR, the one you mentioned near the firewall of the engine bay, correct? I think smacking that on a curb would be near impossible but I could be wrong. But if that code could be flagged due to the exhaust crumpling or something similar that would be understandable.

 

Appreciate the help, I did use a DPF cleaner about a month ago, assuming that covers the EGR too.

Edited October 26 by Dziire

[Stevey Y]

On 10/26/2024 at 6:52 PM, Dziire said:

Yeah perhaps, I'll take another look. I was performing a U-Turn and mounted a curb (a left over pedestrian crossing from roadworks in the middle of the road), the loudest thud was on the inside of the rear passenger side wheel, so around the exhaust area.

That specific code however, it originates from the EGR, the one you mentioned near the firewall of the engine bay, correct? I think smacking that on a curb would be near impossible but I could be wrong. But if that code could be flagged due to the exhaust crumpling or something similar that would be understandable.

 

Appreciate the help, I did use a DPF cleaner about a month ago, assuming that covers the EGR too.

Hi sorry for the late reply, [cab driver], yes the EGR cleaner cleans both as it has a high volume of Hydrocarbon in it which makes the soot particles smaller and burn a lot easier, I have used various forms of this chemical since owning my Audi and I never had to change the EGR valve.

Steve.