Hey I Blocked off my EGR when I installed of 00VI along time ago and every now and then I get the CEL to come on with
"Flashing CEL code 0302
OBD-II Standard P Code P0400
Code Description EGR System"

What are some of you guys doing out there to fool the computer into thinking its working?

I don't like ignoring the light as I would not know when something else went wrong, I got 26.6 MPG with the light on so I don't think its in "Baby Mode" or "Limp mode", also power feels normal.

Historically iv just reset the computer when this comes up but wanted to know what you guys thought

THANKS

 

Ya, 0302 does nothing to affect the power or gas milage.

I dont have the FSM in front of me now so I may be wrong but I think computer looks for the resistance from the temp sensor in the egr tube. It should read a specific value when the EGR is open and flowing and a different resistance when it is closed. Now the tricky part with having it blocked off would be you would need to switch the resistors when the computer opens the egr since it is not 'on' all the time. Anyone have a good method for doing this?

This may all be way wrong too...I researched this awhile back, but right now im at work and no FSM.

 

so I could use a multiplexer to switch between two different resistances depending on the signal to open and close the EGR tube

 

maybe...(I dont know what a multiplexer is). If you figure it out let me know cause Id like to do the same as you.

 

I'd be interested also.

 

yeah I will look into it, my roommate is big into Lexus SCs, he said the guys on his forums just replace the temp sensor with a 10K Ohm Resistor, guess our OBDII system is a little harder to trick.

Our EGR Temp Sensor is a Thermistor or "Thermo Resistor" where the resistance decreases as temp increases. my Haynes Manual does not say what the colder EGR Resistance Value should be but it says the sensor should read 80-100Ohms at 212 Degrees F

Your Could Probably use a relay like this:


One Thing Iv Been playing around with is just loosening the bolts on the tubes block off plate I made so the gas does get vented just not into my manifold . . .

 

Bump, 00vi swapped with nice new p0400 egr flow code. And to make that resistor switch when you idle, slow down, stop engine, start engine, low vehicle speed, etc is tough. The ecu looks for a bunch of conditions before it cuts or vents. It looks for the EGR temp sensor to match up and let the PCM know whether the flow is high or low. If it doesnt make sense, code is tripped. I've got an insufficient flow code...meaning, the ECU said he was expecting flow during activation and my temp sensor said "nope, it didnt happen dude". How do we take care of this?

 

*Cough* bump, lol.

 

How can a misfire on cyl # 2 NOT affect power or milage?

 

also got this code because i have an 01 motor and it has no EGR when someone comes up with something i definitely wanna fix this code in my car

 

I will be getting this code too...........new 01 motor going into my beast, no egr

 

Who said anything about a misfire in #2?

0302 is an EGR system failure code...

 

It actually is a misfire in cylinder 2.

 

What did I miss? 99 FSM says 0302 is EGR code...

 

it actually is an EGR code. we are not talking about P0302.

 

Yeah, what he said. I'm looking at the FSM right now. Section EC, page EC-2, and the footnote at the end of page EC-3.

CEL blinkie code (aka diagnostic test mode II) 0302 = egr system, diagnostic page EC-316.
obdII code read P0302 (also though consult) = missfire cyl #2

I'm fairly sure we're talking about CEL blinkie code? ESPECIALLY given the fact that the header starts out talking about EGR...

I sure am glad we got all that straightened out.

 

OP says he has a flashing 0302, which is a #2 misfire.

Guess I just read it wrong. sorry.

 

a flashing 0302 means he used a screwdriver with the ecu and the CEL to pull the codes and it is an EGR code. An obd2 reader pulls codes that start with P, and P0302 is a cyl #2 misfire, but we are not talking about P0302, we are talking about 0302. Read carefully.

 

AAAAAAAAAAAAAAAAAAAAAaaaaaaaaaaaaaaaaaaaaaaaaaaahh hhhhhhhhhhhhhhhhh

Ahem, I feel much better now.

 

Ok, now that we have that settled.......

This post still remains unchallenged. In other words, he's right. Too many different situations to account for, no single resistor is going to compensate for that.

 

exactly, thats why no one has come up with a solution yet

that diagram with the relay looks like a good idea, the poster should try it.

 

Sorry I have been AFK for 2 years, the relay setup would prob but the you would have to experimentally find the proper resistance. I swapped back to stock since then so I don’t have this problem any more.

 

Well, now that this is settled. What was the problem?

 

Bump because Im still looking for answers. Im firing P0400 as well. 99 ecu btw...FTL...

 

^ Oops. Turns out Im firing P0403 not P0400. Maybe someone can still chime in about it since it has to do with an 00vi/DE-k swap and is egr related.

 

I just installed my obx 3.5 headers which do not have an egr, couple hundred miles down the road the car's is emissions ready with no codes.

I have a 99 btw guys, it should be the same on all maxes 95-00, but don't quote me on that.

My blockoff as follows:

-Remove the egr feed pipe off of the rear header
-Get creative here with the block off, either smash the pipe, or go the extra mile like me and cut the bolt out (the bolt that hooks up to the solenoid, and no lowes does NOT have a bolt big enough, I tried looking for it) and JB weld something in there to block it off (A penny fits perfectly).
-Screw in your new blocked off feed pipe into the solenoid.
-Take the egr pipe off (the upper one that feeds into the mani).
-Remove that sensor and put a screw in it's place (I think the bolts w/ a #7 fit right in, I don't recall at the moment)
-zip tie the sensor somewhere so it doesn't find it's way into a moving part and destroy itself.

That worked for me! Don't forget to get new gaskets for the EGR pipe though (if you remember seeing my header thread, I had an idling problem, needed to replace the gaskets for the egr).

 

But running without an EGR hasnt caused you to go into limp? If I clear my codes, she wont rev past 2500. Gotta run with a cel tripped. But Im firing so many codes, Im trying to figure which one has her doing it. Doubt its my iacv or swirl valve codes so I figure egr through process of elimination.