My Audi dealer have just changed the O2 sensor 1 bank 1 in my A4 2.0TDI 177hp CGLC engine because of error code P2196.
It think the sensor broke because of soot build up after the EA189 emission fix/update.
Ofcourse they deny that this could be because of the fix
I could not claim the warranty "Trust building measure" because the fix was installed more than two years ago, but they were kind to exchange the sensor as goodwill because they did a big service at the same time they had the car.
Anyway, now I have a feeling that something may be wrong with the EGR valve or cleaner, or both.
No warning light have came up yet, but when engine is idling I can hear a constant beeping noise from the engine.
It's not that loud but it's annoying and I'm scared that it could cause a bigger problem soon.
Besides the noise I think the idle is a bit more rough and slight less drag.
I don't dare to leave the car to the Audi dealer for this because I think they will send a costly estimate for a new EGR.
Do you think it's a good idea to have the EGR valve and cooler removed to have it cleaned?
I have a found a genuine Audi workshop manual for the EGR on this car which I thought could help me, but still some questions are roaming in my head.
This manual is an overview of the EGR and also explains how to do clean the EGR cooler. They don't remove the cooler to clean it, they hook up some machine on it and flush it through with some cleaning solution with the cooler still mounted on the engine. According to this manual they don't advice to do this cleaning on EGR with certain part numbers, and my EGR is one of them hmm.
Can't I just rip it out end clean it by hand and put the parts in an ultrasonic cleaner which I have?
To do this I apparently need to drain all the coolant out from the system?
How do I do that and how do I fill it up correctly so there is no air in the system?
Where I can buy genuine gaskets for the EGR?
Sonny
It think the sensor broke because of soot build up after the EA189 emission fix/update.
Ofcourse they deny that this could be because of the fix
I could not claim the warranty "Trust building measure" because the fix was installed more than two years ago, but they were kind to exchange the sensor as goodwill because they did a big service at the same time they had the car.
Anyway, now I have a feeling that something may be wrong with the EGR valve or cleaner, or both.
No warning light have came up yet, but when engine is idling I can hear a constant beeping noise from the engine.
It's not that loud but it's annoying and I'm scared that it could cause a bigger problem soon.
Besides the noise I think the idle is a bit more rough and slight less drag.
I don't dare to leave the car to the Audi dealer for this because I think they will send a costly estimate for a new EGR.
Do you think it's a good idea to have the EGR valve and cooler removed to have it cleaned?
I have a found a genuine Audi workshop manual for the EGR on this car which I thought could help me, but still some questions are roaming in my head.
This manual is an overview of the EGR and also explains how to do clean the EGR cooler. They don't remove the cooler to clean it, they hook up some machine on it and flush it through with some cleaning solution with the cooler still mounted on the engine. According to this manual they don't advice to do this cleaning on EGR with certain part numbers, and my EGR is one of them hmm.
Can't I just rip it out end clean it by hand and put the parts in an ultrasonic cleaner which I have?
To do this I apparently need to drain all the coolant out from the system?
How do I do that and how do I fill it up correctly so there is no air in the system?
Where I can buy genuine gaskets for the EGR?
Sonny
