my ecu knows i'm afraid
#1
my ecu knows i'm afraid
So I checked my ecu for the first time today since I failed my emissions test during my inspection yesterday and wanted to see what the codes were. The guy who did the inspection told me it was the oxygen sensor that set off the check engine light, but when i checked the codes i got these three:
0309 - undefined
0510 - undefined
0705 - EVAP Control System
i have no idea why i got two codes that don't exist and i know that they are right because i checked them about 5 times. since i am still fairly new to the inner workings of cars i don't know what the evap control system is or if it has anything to do with my emissions. help!!!
thanks, tim
0309 - undefined
0510 - undefined
0705 - EVAP Control System
i have no idea why i got two codes that don't exist and i know that they are right because i checked them about 5 times. since i am still fairly new to the inner workings of cars i don't know what the evap control system is or if it has anything to do with my emissions. help!!!
thanks, tim
#3
Originally Posted by gsmith795
So I checked my ecu for the first time today since I failed my emissions test during my inspection yesterday and wanted to see what the codes were. The guy who did the inspection told me it was the oxygen sensor that set off the check engine light, but when i checked the codes i got these three:
0309 - undefined
0510 - undefined
0705 - EVAP Control System
i have no idea why i got two codes that don't exist and i know that they are right because i checked them about 5 times. since i am still fairly new to the inner workings of cars i don't know what the evap control system is or if it has anything to do with my emissions. help!!!
thanks, tim
0309 - undefined
0510 - undefined
0705 - EVAP Control System
i have no idea why i got two codes that don't exist and i know that they are right because i checked them about 5 times. since i am still fairly new to the inner workings of cars i don't know what the evap control system is or if it has anything to do with my emissions. help!!!
thanks, tim
Its long and then short blinks:
If you interpret:
0309 as 0903 - that points to EVAP Vent Control Valve
0501 as 1005 - thats the EGRC- Solenoid Valve
Go back and pull the codes again to make sure you got them right the first time, i.e. slow blinks followed by the fast blinks. You got it right on the 0705 - so I'm surprised that you flipped the other two - but thats what most likely happened. Double check and get back to us.
![Wink](https://maxima.org/forums/images/smilies/wink.gif)
#4
Originally Posted by njmodi
I think you have flipped the long and short blinks... (assuming that you pulled the codes via the blinking CEL).
Its long and then short blinks:
If you interpret:
0309 as 0903 - that points to EVAP Vent Control Valve
0501 as 1005 - thats the EGRC- Solenoid Valve
Go back and pull the codes again to make sure you got them right the first time, i.e. slow blinks followed by the fast blinks. You got it right on the 0705 - so I'm surprised that you flipped the other two - but thats what most likely happened. Double check and get back to us.![Wink](https://maxima.org/forums/images/smilies/wink.gif)
Its long and then short blinks:
If you interpret:
0309 as 0903 - that points to EVAP Vent Control Valve
0501 as 1005 - thats the EGRC- Solenoid Valve
Go back and pull the codes again to make sure you got them right the first time, i.e. slow blinks followed by the fast blinks. You got it right on the 0705 - so I'm surprised that you flipped the other two - but thats what most likely happened. Double check and get back to us.
![Wink](https://maxima.org/forums/images/smilies/wink.gif)
#5
I have 0309 right now ... used to come off/on every few hundred miles but now it's on solid. Praying I pass emissions still (this doesn't really deal with emissions anyways) in november... taxachusetts is getting so **** about everything with car inspections over the last few years!
#8
Originally Posted by njmaxseltd
0309 - EVAP canister vent control valve open
0510 - Downstream oxygen sensor maximum voltage monitor fault
Haynes shop manual![Reading](https://maxima.org/forums/images/smilies/read.gif)
You have more then one problem going on.
0510 - Downstream oxygen sensor maximum voltage monitor fault
Haynes shop manual
![Reading](https://maxima.org/forums/images/smilies/read.gif)
You have more then one problem going on.
![Me cry](https://maxima.org/forums/images/smilies/mecry.gif)
![sadpace](https://maxima.org/forums/images/smilies/sadpace.gif)
#9
Originally Posted by njmaxseltd
0309 - EVAP canister vent control valve open
0510 - Downstream oxygen sensor maximum voltage monitor fault
Haynes shop manual![Reading](https://maxima.org/forums/images/smilies/read.gif)
You have more then one problem going on.
0510 - Downstream oxygen sensor maximum voltage monitor fault
Haynes shop manual
![Reading](https://maxima.org/forums/images/smilies/read.gif)
You have more then one problem going on.
![Scratch](https://maxima.org/forums/images/smilies/scratchhead.gif)
#10
You need to replace the Evap Canister Valve and the downstream O2 sensor. Reset the ECU after that and you should be all set. If you don't have a Haynes manual, get one, it will guide you through the repairs. Both are easy to do yourself.
#11
Originally Posted by njmodi
You need to replace the Evap Canister Valve and the downstream O2 sensor. Reset the ECU after that and you should be all set. If you don't have a Haynes manual, get one, it will guide you through the repairs. Both are easy to do yourself.
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
#13
Originally Posted by njmodi
You need to replace the Evap Canister Valve and the downstream O2 sensor. Reset the ECU after that and you should be all set. If you don't have a Haynes manual, get one, it will guide you through the repairs. Both are easy to do yourself.
also, could you tell me the page number in the Haynes manual which could guide me through the replacement of the Evap canister valve?
thanks
tim
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