DC5R Exhaust O2 Sensor

I needed a new oxygen sensor, so yes I went and brought a new one, installed yet, tried to do an ecu reset (battery trick), turn the car on yet the CEL remains.

So the question is, do I need to clear the code to get rid of the CEL light?

Even after the oxygen sensor change the exhaust still smells rich and eggy, so would clearing the code fix this?

Another thing, is there any other fuses I should check to see if its blown (pretty much checked every fuse under the hood and under the steering wheel and none are blown).

Suggestions are welcome :)

Below is the procedure to reset the ECU, try that and see what happens. Which oxygen sensor was broken?

http://a.imageshack.us/img837/3071/resettheecu.jpg

primary yo, ill give that a shot when i get my hands on the scan tool and a blow torch to check if my other o2 sensor was faulty or was it writing

wen I had a CEL lgiht, i just d/c battery and it reset the ECU.

I recently changed my headers and had a CEL afterwards, turned out I had not plugged the oxygen sensor in properly at the connectors....fail. So yeah, wouldn't hurt to double check those connectors have fully clicked in. I also did the battery diconnect and stand on the brake pedal ecu reset after.

Quote:

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Originally Posted by r3ckless

wen I had a CEL lgiht, i just d/c battery and it reset the ECU.

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unfortunately that didn't work for me :(

Quote:

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Originally Posted by Nighthawk_S

I recently changed my headers and had a CEL afterwards, turned out I had not plugged the oxygen sensor in properly at the connectors....fail. So yeah, wouldn't hurt to double check those connectors have fully clicked in. I also did the battery diconnect and stand on the brake pedal ecu reset after.

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what does standing on the brake pedal do?

Some people say that when you disconnect the battery you have to wait a while for residual stored power to drain. Standing on the brakes is supposed to drain this residual power straight away...apparently. Someone electrically minded might be able to say if there is actually any point to doing this.

ah would be the same thing as turning on the low beams to drain out the remaining current in the car

Did you get the CEL code read to determine that it was the primary O2 sensor that was faulty?

i didnt get the obd2 tool but i used that 4-9pin obd socket trick to get the code

so that how u reset a ECU lol thanks ChargeR

my cel lgiht kept on appearing becuase ofmy headers/cat .. had 2 get a defouler installed..

running stock headers and cat btw

just an update, my obd2 reader finally just magically worked and was able to read the code, showed up P1166 and P1167 which was in relations to the primary o2 sensor

with a bit of digging around on the interweb in the past few weeks, you had to clear these code for the CEL after the primary o2 sensor install using the obd2 reader (ecu reset wont do the trick), did that just then

will run the car tomorrow morning to see if its all fixed cos its a bit loud and dont want neighbors to get pissy

so in summary, all i had to do was clear the codes using the obd2 reader... hopefully

Quote:

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Originally Posted by chargeR

Below is the procedure to reset the ECU, try that and see what happens. Which oxygen sensor was broken?

http://a.imageshack.us/img837/3071/resettheecu.jpg

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Well i had my engine light keep coming up but i'd turn the car off and it disappear and wouldnt come back
Yes i know im resurrecting a thread but unlike most people i searched :)

Thanks ChargeR for this as i reset my ECU and atm the engine light hasnt come back on but ill assess again tomorrow

+1 Rep :)

BTW guys/girls, if you have a CAI or whatever, make sure you leave your car running for at least 15mins so the ECU can run in your mods alright.. thought i should add that

Quote:

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Originally Posted by r3ckless

my cel lgiht kept on appearing becuase ofmy headers/cat .. had 2 get a defouler installed..

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Where did you get a defouler installed

sickest guy bro cool