Audi A2 ATL 90hp 1.4 EGR off help

by **AlexA2ATL** » Mon Feb 02, 2026 12:28 pm

please for help.
I need advice or turn off EGR (The EGR card has been modified), but the error icon is still on the screen.
Audi A2 ATL 90hp 1.4tdi EDC15
thank you for any help. ;)

by **Shooting** » Mon Feb 02, 2026 7:14 pm

AlexA2ATL wrote:please for help.
I need advice or turn off EGR (The EGR card has been modified), but the error icon is still on the screen.
Audi A2 ATL 90hp 1.4tdi EDC15
thank you for any help. ;)

You had your smoke limiter altered, try this and see if its ok

wbr

by **AlexA2ATL** » Mon Feb 02, 2026 9:07 pm

You had your smoke limiter altered, try this and see if its ok

you're right, I changed this card along with the EGR card.
your suggestion is to return to stock. That's not what I need.I would like the Check Engine icon to go off.

Something else needs to be changed, I don't understand what exactly.

by **Shooting** » Mon Feb 02, 2026 9:48 pm

AlexA2ATL wrote:You had your smoke limiter altered, try this and see if its ok

you're right, I changed this card along with the EGR card.
your suggestion is to return to stock. That's not what I need.I would like the Check Engine icon to go off.

Something else needs to be changed, I don't understand what exactly.

That's incorrect, only the EGR needs to be closed, but your DTC's may need removing.
Here with the following DTC's removed:

Code: Select all: DTC P0401 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Insufficient Detected DTC P0402 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Excessive Detected DTC P0489 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit Low DTC P0490 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit High DTC P2425 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit/Open DTC P2427 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit High

wbr

by **AlexA2ATL** » Tue Feb 03, 2026 7:29 am

Shooting wrote:
AlexA2ATL wrote:You had your smoke limiter altered, try this and see if its ok

you're right, I changed this card along with the EGR card.
your suggestion is to return to stock. That's not what I need.I would like the Check Engine icon to go off.

Something else needs to be changed, I don't understand what exactly.

That's incorrect, only the EGR needs to be closed, but your DTC's may need removing.
Here with the following DTC's removed:

Code: Select all
DTC P0401 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Insufficient Detected DTC P0402 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Excessive Detected DTC P0489 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit Low DTC P0490 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit High DTC P2425 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit/Open DTC P2427 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit High

wbr

Thanks for the quick reply
My EGR is physically disabled.
more clean air enters the engine
so I increased the Smoke limits and I hope that the engine will be more powerful up to 2000 rpm

by **Shooting** » Tue Feb 03, 2026 9:57 am

AlexA2ATL wrote:
Shooting wrote:
AlexA2ATL wrote:You had your smoke limiter altered, try this and see if its ok

you're right, I changed this card along with the EGR card.
your suggestion is to return to stock. That's not what I need.I would like the Check Engine icon to go off.

Something else needs to be changed, I don't understand what exactly.

That's incorrect, only the EGR needs to be closed, but your DTC's may need removing.
Here with the following DTC's removed:

Code: Select all
DTC P0401 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Insufficient Detected DTC P0402 disabled! found 2 time(s) - Exhaust Gas Recirculation Flow Excessive Detected DTC P0489 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit Low DTC P0490 disabled! found 2 time(s) - Exhaust Gas Recirculation Control Circuit High DTC P2425 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit/Open DTC P2427 disabled! found 2 time(s) - Exhaust Gas Recirculation Cooling Valve Control Circuit High

wbr

Thanks for the quick reply
My EGR is physically disabled.
more clean air enters the engine
so I increased the Smoke limits and I hope that the engine will be more powerful up to 2000 rpm

Use my file, the real reason you had lights on your dash is because you physically removed the EGR,
if you'd had said that in the beginning I'd have given you this file earlier.

Changing Smoke limiter alone won't help you.

wbr

by **AlexA2ATL** » Tue Feb 03, 2026 11:57 am

Thank you again for your help!

by **AlexA2ATL** » Sun Feb 08, 2026 6:32 pm

One more questions
is there a switch in my file to disable EGR?
or there is no switch and I need to change the EGR card?

by **Shooting** » Mon Feb 09, 2026 10:58 am

AlexA2ATL wrote:One more questions
is there a switch in my file to disable EGR?
or there is no switch and I need to change the EGR card?

I gave you the finished solution, you do not need to do any more.

wbr

by **AlexA2ATL** » Mon Feb 09, 2026 7:13 pm

the Check engine error no longer appears, but it looks like I did everything wrong. I wanted the ECU not to control the EGR valve, I wanted to tell the ECU that the EGR system is missing in the engine. As a result, the ECU still continues to control the EGR valve.

how to tell the ECU that EGR have been removed?