Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

weird check engine light. need help

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Old May 14, 2010 | 08:52 AM
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Default weird check engine light. need help

i recently started getting a check engine light. im not new to hondas but this is a new car for me. it's a 96 civic with a obd2a-obd1 jumper and when i use the wire to check the engine light i come up with code 33 but thats not a real code. can you look at this video and tell me what code or codes i have. the car is not running any diffrent. and the light only comes on after a few minutes or driving then remains on untill i cut the car off.

http://www.youtube.com/watch?v=hP-HgFCuqn4
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Old May 14, 2010 | 08:57 AM
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Default Re: weird check engine light. need help

if u looked it up and it is nothing dont worry about it

i had a h22eg coupe *jdm h22A and i had 2 ghost codes
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Old May 14, 2010 | 09:00 AM
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Default Re: weird check engine light. need help

ya i really feel like i must be reading it wrong.
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Old May 14, 2010 | 09:08 AM
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Default Re: weird check engine light. need help

Codes 10 and 43

Check the IAT sensor and the primary O2 sensor.
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Old May 14, 2010 | 09:10 AM
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Default Re: weird check engine light. need help

Well, is it 3 long flashes flowed by 3 short flashes, or are the sets of 3 flashes the same? What ECU do you have (that may help to know)?
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Old May 14, 2010 | 09:11 AM
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Default Re: weird check engine light. need help

Originally Posted by RonJ@HT
Codes 10 and 43

Check the IAT sensor and the primary O2 sensor.
damn, ok ill check thoes out.
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Old May 14, 2010 | 09:12 AM
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Default Re: weird check engine light. need help

Originally Posted by honda_luvr_2000
Well, is it 3 long flashes flowed by 3 short flashes, or are the sets of 3 flashes the same? What ECU do you have (that may help to know)?
well watch the video. im on a p28 chipped on chrome.
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Old May 14, 2010 | 09:16 AM
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Default Re: weird check engine light. need help

Originally Posted by RonJ@HT
Codes 10 and 43

Check the IAT sensor and the primary O2 sensor.
it says 43 is fuel system supply not o2. (o2 = code 41)
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Old May 14, 2010 | 09:21 AM
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Default Re: weird check engine light. need help

For code 43, you focus on checking the primary O2 sensor if you have no performance problems. If you have performance problems, then troubleshoot the fuel system, such as measuring the fuel pressure.

Code 41 indicates a problem with the circuit for the heater element in the O2 sensor, not the sensor itself.
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Old May 14, 2010 | 09:41 AM
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Default Re: weird check engine light. need help

Originally Posted by RonJ@HT
For code 43, you focus on checking the primary O2 sensor if you have no performance problems. If you have performance problems, then troubleshoot the fuel system, such as measuring the fuel pressure.

Code 41 indicates a problem with the circuit for the heater element in the O2 sensor, not the sensor itself.
ok that kinda makes sense. i just got it tuned on chrome about 200 miles ago. he told me the o2 is not even being monitered by the ecu but it is still wired up. then it started getting this cel like 30 miles ago. then i tried to hook up a air fuel gauge ( just for looks i know) to the fat white wire on the ecu and the gauge doesnt work.
do you feel i should just unhook the o2 from the harness??
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Old May 14, 2010 | 09:44 AM
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Default Re: weird check engine light. need help

Call your tuner and explain the problem. It is possible that fixing the IAT sensor code will eliminate code 43, so start there.
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Old May 14, 2010 | 09:51 AM
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Default Re: weird check engine light. need help

Originally Posted by RonJ@HT
Call your tuner and explain the problem. It is possible that fixing the IAT sensor code will eliminate code 43, so start there.
hey thanks for all the help. i fixed the iat problem the damn sensor was loose. so now im going to drive it and see if the light comes back on. im pretty sure the iat problem just happend yesterday. so we will just have to see.
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Old May 14, 2010 | 11:56 AM
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Default Re: weird check engine light. need help

ok still got the damn code
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Old May 14, 2010 | 12:01 PM
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Default Re: weird check engine light. need help

did you clear your ecu when you were done? un plug the battery for a couple mins...
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Old May 14, 2010 | 12:55 PM
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Default Re: weird check engine light. need help

Originally Posted by DCRB
did you clear your ecu when you were done? un plug the battery for a couple mins...
ya i un hooked the battery for 10 minutes.
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Old May 14, 2010 | 03:30 PM
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Default Re: weird check engine light. need help

Originally Posted by bigodub93
well watch the video. im on a p28 chipped on chrome.
The PC I was on earlier blocked it. I didn't even know it was there until now.

Originally Posted by DCRB
did you clear your ecu when you were done? un plug the battery for a couple mins...
Originally Posted by bigodub93
ya i un hooked the battery for 10 minutes.
Do you guys know you can just pull the back-up fuse to reset the ECU? You don't have to unhook the battery.

Originally Posted by bigodub93
ok still got the damn code
What did you try that resulted in the same code?
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Old May 14, 2010 | 05:52 PM
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Default Re: weird check engine light. need help

Originally Posted by honda_luvr_2000
The PC I was on earlier blocked it. I didn't even know it was there until now.



Do you guys know you can just pull the back-up fuse to reset the ECU? You don't have to unhook the battery.


What did you try that resulted in the same code?
I fixed my iat sensor. Then reset the Ecu and went for a drive. The cel came back on. And I noticed that the air / furl gauge still only works for about 45sec than goes blank
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Old May 14, 2010 | 06:19 PM
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Default Re: weird check engine light. need help

Pull the codes. Do you get code 14 or code 43 or both? By the way, the air:fuel gauge relies on information from the O2 sensor. This may give you a hint about the CEL.
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Old May 15, 2010 | 12:06 PM
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Default Re: weird check engine light. need help

http://www.youtube.com/watch?v=IflawzYdWF0

well im pretty sure that is a code 43.
so now im wanting to know i would even get this code if im tuned on chrome. i dont know anything about chrome but if my ecu doesnt use the o2 sensor to run the car why do i get a cel.
what im going to do is try to replace the o2 sensor. but i have to find a used one. do you think if i just unhook it would i still get a cel.
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Old May 15, 2010 | 01:15 PM
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Default Re: weird check engine light. need help

Every start up there is no cel then about 1- 3 min later the cel comes on untill I turn the car off.
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Old May 19, 2010 | 01:49 PM
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Default Re: weird check engine light. need help

I'm still looking for a known working used o2 sensor to test out
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