MED 9.1 2.0 TFSI DTC remove relay ECM

by **pompaka** » Mon Jan 31, 2022 12:42 pm

Hi everyone, I installed an ignition cut-off (theft protection) that causes the ECM relay to disconnect, but unfortunately the ECU diagnosis of a relay open circuit occurs even without the ignition on and the controller reports 2 errors: 001672 - P0688 -004 - ECM supply relay open circuit (J271)
001669 - P0685 - 004 - open circuit - sporadic ECM relay (J271)
Can I have these DTCs removed from the controller?

Audi A4 2.0 TFSI BGB 8E0 910 115 J

by **Lambda1** » Mon Jan 31, 2022 6:51 pm

test and report about

by **pompaka** » Wed Feb 02, 2022 1:49 pm

I tested,
001669 - P0685 - 004 - open circuit - sporadic ECM relay (J271) - has disappeared.
The VCDS still shows 2 errors:
001672 - Load Circuit ECM Supply Relay (J271) - P0688 - 004 - Open Circuit
There is another one that was not there before:
001670 - ECM Power Relay Load Circuit (J271) - P0686 - 002 - Short to ground.
Can something be done about it?
Thanks.