# 96 Camry did not pass DEQ inspection **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** toyota, camry\ **Created:** [September 29, 2010, 11:38pm UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765 "2010-09-29T23:38:42Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Mando1](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@Mando1](https://community.cartalk.com/u/Mando1)\ **Post date:** [September 29, 2010, 11:38pm UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/1 "2010-09-29T23:38:42Z")
In our city our cars need to pass a “DEQ Inspection” prior to renewing our tags. The diagnostic came back saying that detected an “insufficient flow of exhaust gas recirculation”. I asked the tech what this meant? He said that the EGR might be plugged or they need to be replaced/ Can I unplug myself or replace it myself? ---
**Author:** ![researcher](https://avatars.discourse-cdn.com/v4/letter/r/edb3f5/32.png) [@researcher](https://community.cartalk.com/u/researcher)\ **Post date:** [September 29, 2010, 11:59pm UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/2 "2010-09-29T23:59:50Z")
Do you have the L4 or the V6 engine in this Camary? Was there a specific Diagnostic Trouble Code recorded and can you include that in your posting? Usually when the EGR DTC codes sets for insufficient flow, it could be anything from a broken vacuum line to a plugged passage. The PCM is just letting it be known that it did not see the correct engine response to a commanded EGR action. It doesn’t know or care where the exact problem is located. Ergo, follow the troubleshooting tree for the DTC code recovered. There are a number of things you will have to check. For the L4, there is the EGR valve itself; the exhaust gas pipe; the EGR back pressure transducer; the EGR solenoid; and the EGR vacuum regulator solenoid. There are similar units to check on the V6. The EGR valve will be harder to access on the V6. Good luck on this. ---
**Author:** ![Mando1](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@Mando1](https://community.cartalk.com/u/Mando1)\ **Post date:** [September 30, 2010, 12:05am UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/3 "2010-09-30T00:05:52Z")
V6. P0401 Is there a way to unplug the passage or at least to check if there is a plugged passage? Thanks! ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [September 30, 2010, 12:10am UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/4 "2010-09-30T00:10:46Z")
Yes. Remove the EGR, and run a fine wire down the passages in the manifold. Sometimes the riser pipe, if so equipped, can get plugged, and replacing it is easier than chipping the carbon out of it. ---
**Author:** ![Mando1](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@Mando1](https://community.cartalk.com/u/Mando1)\ **Post date:** [September 30, 2010, 12:13am UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/5 "2010-09-30T00:13:57Z")
Thanks! Let’s give her a try! ---
**Author:** ![researcher](https://avatars.discourse-cdn.com/v4/letter/r/edb3f5/32.png) [@researcher](https://community.cartalk.com/u/researcher)\ **Post date:** [September 30, 2010, 12:16am UTC](https://community.cartalk.com/t/96-camry-did-not-pass-deq-inspection/55765/6 "2010-09-30T00:16:51Z")
Another way to check without removing the EGR valve is to apply a vacuum supply to the EGR diaphragm. If the engine stumbles badly and/or dies you know that there is sufficient flow available. BTW the PCM senses the gas flow in the V6 with a temperature sensor built into the EGR valve. Interesting feed back method.