Check engine : code 12.

LV_legend · 11-03-02, 11:59 PM

My 94 L 161k miles sedan with Auto tranny got check engine light turned on...

Check the code and it is 12, which is something about EGR.

I am currently trying to diagnose what went really wrong. problem is I also have to drive it for daily commuting.

2 Questions,

1. Is it ok to drive it with EGR problem?

2. Is it common problem?

Thank you in advance.

95gs · 11-04-02, 05:15 PM

I have the same code since day one (actually since 39.5K miles from a Toyota used car dealer).

It would only comes on on longer trip.

i was told by a technician "not to worry" , it only affects the emmssion stuff/air mixing percentage (?).

Never really bother me thou.

**502 MotorSports** · 11-04-02, 06:37 PM

codes..click here

Hopefully you find this useful

jmckell · 11-04-02, 06:41 PM

Quote:

Originally posted by 95gs
I have the same code since day one (actually since 39.5K miles from a Toyota used car dealer).

It would only comes on on longer trip.

i was told by a technician "not to worry" , it only affects the emmssion stuff/air mixing percentage (?).

Never really bother me thou.

Is this the same for the ABS? My ABS light came on. How do I find out what is wrong?

Silver · 11-05-02, 01:34 AM

How do you check what code is being put out? Thanks

95gs · 11-05-02, 10:43 AM

Quote:

Originally posted by jmckell

Is this the same for the ABS? My ABS light came on. How do I find out what is wrong?

Not the same.

See Leon's post above for "priceless" info on where & how to extract ECU codes.

Mckenzie93 · 11-05-02, 10:49 AM

Quote:

Originally posted by jmckell

Is this the same for the ABS? My ABS light came on. How do I find out what is wrong?

Joel.....

Try to reset the system by pulling the ABS fuse in the fuse box...... if that does not work you may have to try and acquire the trouble codes from the ABS connector in the passenger side kick panel.

MY ABS light was on for about 3 weeks, and finally I was going to get the codes and I figured why not pull the fuse.... well I did and it reset the system and everything was good until I sold the car back in January.

dandadda · 11-05-02, 01:30 PM

I had the same problem not too long ago, the only difference is that i knew where the hose was leaking from.. It has to do with your vacum hoses.. check to make sure they are all connected and none is loose, my problem happen to be a small black container below the airbox, had two air hose running into it, one somehow came loose, probably when i was installing the engine. Anyways check your vacum hoses and make sure none is loose, might take you some time though!
Peace!

LegendC · 11-05-02, 05:27 PM

Looking at your milage I would guess your EGR valve is blocked. When I rebuilt my heads I look the EGR off and cleaned it out with a screwdriver and carb cleaner. Mine was completely solid with carbon deposits...at 140K. Its a DIY job, the EGR is on the back of the engine....just be carful with the seal around it.

11-03-02, 11:59 PM	#1 (permalink)
LV_legend Registered User Join Date: Jul 2002 Location: Michigan Posts: 362 iTrader: (1)	Check engine : code 12. My 94 L 161k miles sedan with Auto tranny got check engine light turned on... Check the code and it is 12, which is something about EGR. I am currently trying to diagnose what went really wrong. problem is I also have to drive it for daily commuting. 2 Questions, 1. Is it ok to drive it with EGR problem? 2. Is it common problem? Thank you in advance.

11-04-02, 06:37 PM	#3 (permalink)
502 MotorSports 502MotorSports.com Join Date: Jan 2002 Location: ATLVILLE Posts: 9,445 Car 1: e39 540i Car 2: e46 325xi \| e46 330i Car 3: S430 iTrader: (0)	ecu codes codes..click here Hopefully you find this useful __________________ The Hotness! Elevate Your Standards.... Legend Mod Money! Jasmyn \| Final e39 Pics \| 502MotorSports MySpace

11-05-02, 01:30 PM	#8 (permalink)
dandadda Mr. Man Join Date: Sep 2002 Location: Florida Posts: 69 Car 1: 1991 Acura Legend 4dr iTrader: (0)	I had the same problem not too long ago, the only difference is that i knew where the hose was leaking from.. It has to do with your vacum hoses.. check to make sure they are all connected and none is loose, my problem happen to be a small black container below the airbox, had two air hose running into it, one somehow came loose, probably when i was installing the engine. Anyways check your vacum hoses and make sure none is loose, might take you some time though! Peace! __________________ <b>New Pics> <img src= "ftp://sv1.carlc.com/www/photos/img2331.jpg">

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11-04-02, 05:15 PM	#2 (permalink)
95gs Registered User Join Date: Jan 2002 Location: MD Posts: 821 Car 1: 4 wheels, 1 engine, 4 doors and too many to list iTrader: (0)	I have the same code since day one (actually since 39.5K miles from a Toyota used car dealer). It would only comes on on longer trip. i was told by a technician "not to worry" , it only affects the emmssion stuff/air mixing percentage (?). Never really bother me thou.

11-05-02, 01:34 AM	#5 (permalink)
Silver F O B o L o * S Join Date: Feb 2002 Location: MD Posts: 238 Car 1: 94 LS Coupe iTrader: (0)	How do you check what code is being put out? Thanks

11-05-02, 05:27 PM	#9 (permalink)
LegendC Symply Legendary Join Date: Jan 2002 Location: Fife, WA Posts: 600 Car 1: 1994 LS Coupe (Modded) iTrader: (0)	Looking at your milage I would guess your EGR valve is blocked. When I rebuilt my heads I look the EGR off and cleaned it out with a screwdriver and carb cleaner. Mine was completely solid with carbon deposits...at 140K. Its a DIY job, the EGR is on the back of the engine....just be carful with the seal around it.

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