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Old 06-20-2011, 09:14 AM   #1
some dude
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Default Deleting CELs with Tratrix cable, learning how to

I have a 2006 TR and my aux air pump has a valve stuck closed. Instead of fixing the problem, I have chosen to use a Tratrix cable to delete the code permanently. I want to understand what I'm doing, but feel overwhelmed about where to start learning.
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Old 06-20-2011, 10:02 AM   #2
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Deleting the code stops the CEL from coming on. It does not stop whatever protective measures the ECU might take because of the error condition. So the error is still seen by the ECU, it's just not reported to you.
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Old 06-20-2011, 11:09 AM   #3
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I deleted my air pump codes b/c I had a stuck valve in the air pump system and I needed to pass inspection. I disabled them and flashed the ECU and passed inspection.
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Old 06-20-2011, 11:47 AM   #4
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Deleting the code stops the CEL from coming on. It does not stop whatever protective measures the ECU might take because of the error condition. So the error is still seen by the ECU, it's just not reported to you.
Nope. Turning off the CEL disables any action the ECU might take because of that CEL as well. The code is gone, it's not reported by the ECU to an OBD-II reader, and the car won't go into limp mode anymore.


OP - Use ECUFlash to pull the ROM off of the ECU using the Tactrix cable, save it somewhere on your computer (say, stock.hex). Using either ECUFlash or RomRaider, open the saved ROM, go to the DTC section, and click the check box next to whatever CELs you want to turn off. When you're done, save the ROM as a new file (say, stock_noAPCEL.hex). Then open up ECUFlash again, select your file, and flash it onto the ECU.
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Old 06-20-2011, 01:09 PM   #5
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Sorry, my bad. From ECU code I've studied it seems like the CEL bits are only evaluated to turn on the CEL and not for any other logic like limp mode. Obviously the ROMS I studied (old ones from the 1993 Subaru) have different logic from the newer ROMS.
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Old 06-20-2011, 01:17 PM   #6
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Sorry, my bad. From ECU code I've studied it seems like the CEL bits are only evaluated to turn on the CEL and not for any other logic like limp mode. Obviously the ROMS I studied (old ones from the 1993 Subaru) have different logic from the newer ROMS.
It could be that things have changed in the newer ROMs. The only CEL I've encountered where disabling it in the ROM does not have an effect on the car still taking action is misfires. Even if you turn off the misfire CELs, the car still disables the cruise control when it encounters one (although nothing shows up on an OBD-II scanner anymore). Things like TGVs, air pump delete, etc., will return the car to normal (disabling any kind of limp mode) when you turn off the CEL in the ROM.
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Old 06-21-2011, 05:44 PM   #7
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to disable a CEL in ecuflash u need to check the Box of the CEL....then click on "enable "
then the [ ] keys will toggle between enable/disable
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Old 10-01-2011, 11:07 AM   #8
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I am going to connect the green connector under steering column before I plug in the tratrix and is that it? A write-up I am using also talks about 'jumper the flash block connector'? It seems like that is for 02-05 WRX, so you don't do it on 2006? Sorry, i am just so paranoid about bricking my ECU.
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Old 10-01-2011, 12:33 PM   #9
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Flash block is only for the 16-bit ECU, you have a 32-bit.
You're way too concerned about bricking the ECU...if you do it wrong, don't connect a connector you should, etc., it just won't flash, it won't brick anything.

There are very few ways you can brick it, and all of them are caused by the connection being interrupted mid-flash. This includes laptop battery dying, car battery dying, accidentally disconnecting the cable, etc. And in all of these cases, if you just make sure you LEAVE THE IGNITION ON, you can fix the problem and redo the flash. The ECU doesn't become bricked until you turn off the ignition, so just make sure you don't turn off the ignition unless the flash never started, or it comes up with the message that it completed successfully.
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Old 10-01-2011, 02:34 PM   #10
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Quote:
Originally Posted by pmugabi View Post
Sorry, my bad. From ECU code I've studied it seems like the CEL bits are only evaluated to turn on the CEL and not for any other logic like limp mode. Obviously the ROMS I studied (old ones from the 1993 Subaru) have different logic from the newer ROMS.
It's like that for the 16 bit ECU's but not the 32bit ECU's (unless something has changed )
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Old 10-01-2011, 03:00 PM   #11
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Thanks for the help. I got the job done and feel very relieved.
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Old 10-04-2011, 12:22 PM   #12
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I know for a fact that the newer cars 08+ Disabling the the rear o2 sensor codes and other related codes(other than Cat efficiency) only turn off the code but the car will go into a limp mode when the rear o2 isn't functioning or if use one of those o2 spacers, or a Agency Power Downpipe. Yes, the use of the mechanical CEL fix causes CEL's on these cars. And don't buy an Agency power DP without welding a normal o2 bung onto it.

During this limp mode CL targets between 13.3-13.0:1 AFR. This is not good for gas mileage and also causes the car to feel sluggish in closed loop and lumpy on the CL/OL transition.
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Old 10-04-2011, 12:36 PM   #13
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I know for a fact that the newer cars 08+ Disabling the the rear o2 sensor codes and other related codes(other than Cat efficiency) only turn off the code but the car will go into a limp mode when the rear o2 isn't functioning or if use one of those o2 spacers, or a Agency Power Downpipe. Yes, the use of the mechanical CEL fix causes CEL's on these cars. And don't buy an Agency power DP without welding a normal o2 bung onto it.

During this limp mode CL targets between 13.3-13.0:1 AFR. This is not good for gas mileage and also causes the car to feel sluggish in closed loop and lumpy on the CL/OL transition.
Correct, you can't remove the rear o2 on the 32-bit ECU (any of them), or it will drop the closed loop fueling target by 1-2 points. It's not really a "limp mode", it's just how the closed loop fueling system was designed.
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Old 10-04-2011, 12:50 PM   #14
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^ the difference is that the 08+ cars actually still show the CEL, traction control and cruise lights....so it looks like limp mode even though the wgdc isnt 0'd.....at least i dont think its zero'd.
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Old 06-12-2012, 02:26 PM   #15
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Somewhat old bump.
I have the same air pump failure on a 06 WRX as well and looking to do the same CEL code delete.
I have been running a stage 2 set up with an Accessport V1 for a couple of years and have been pretty happy with it. Based on my search, it sounds like I can use ECUFlash and a Tactrix cable to pull the ROM off the ECU with the stage 2 map. From what I've read, Acessport V1 is not locked like Accessport V2 is. I can then turn off the CEL codes related to the air pump, and then reload the ROM. Is this correct?
I assume that I could still unmarry the Accessport after if needed?
I don't really plan on doing any tuning with the Tactrix cable, is there other cheaper options than the current $169 Openport 2.0? I don't really mind as it is A LOT cheaper than fixing the air pump valve issues.
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Old 03-28-2014, 11:00 AM   #16
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^ what did you end up doing?
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Old 03-29-2014, 09:01 AM   #17
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Yep, I plugged the air ports on the engine, bought a cable, and removed the codes. It was a couple of years ago and has been fine. I think the car is a little sluggish when first started, when it's real cold, but not a big deal.
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