# OBD code 12 - 90 Acura Integra

**URL:** <https://community.cartalk.com/t/obd-code-12-90-acura-integra/140915>\
**Category:** Maintenance/Repairs\
**Created:** [May 24, 2019, 6:00pm UTC](https://community.cartalk.com/t/obd-code-12-90-acura-integra/140915 "2019-05-24T18:00:54Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![sciconf](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@sciconf](https://community.cartalk.com/u/sciconf)\
**Post date:** [May 24, 2019, 6:00pm UTC](https://community.cartalk.com/t/obd-code-12-90-acura-integra/140915/1 "2019-05-24T18:00:54Z")

</div>

1990 Auto with 100k miles

There is a long blink followed by two short blinks -12

12 Exhaust Gas Recirculation System

[https://www.team-integra.net/forum/blogs/90\_integrals/271-gen2-90-91-pulling-ecu-cel-codes-code-list.html](https://www.team-integra.net/forum/blogs/90_integrals/271-gen2-90-91-pulling-ecu-cel-codes-code-list.html)

Is there an urgency to fix this - what is the issue? Any shortcut to fix this?  
Can this cause the engine oil light to flicker?

Thanks

---

<div class="post-metadata">

**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [May 24, 2019, 7:12pm UTC](https://community.cartalk.com/t/obd-code-12-90-acura-integra/140915/2 "2019-05-24T19:12:14Z")

</div>

DTC 12 = No Exhaust Gas Recirculation Action.

Vacuum hose disconnected, EGR valve diaphragm has a hole, EGR valve plugged with carbon, EGR valve feed pipe plugged.

The EGR valve recirculates exhaust gasses into cylinders to reduce combustion temperatures. This reduces NOx emissions.

I can’t see how this code would cause the oil light to flicker.

Tester