To clear the code or not clear the code, that is the question
#1
To clear the code or not clear the code, that is the question
My SES light is on. Its the O2 sensor. I know which one so I replaced it today. Do I need to reset the ECU and clear the code so the light goes off or will it go off on its own.
#4
Yes!!! Actually... my inspection is due in 10 days. The last time I reset it with my scanner I drove it about 80 miles and brought it back for testing and it failed because all the systems hadn't reset. They told me to drive around for another 100 or so miles. I can't possibly drive the car close to 200 miles in 10 days. I will be lucky to do 75 miles tops.
Last edited by jgcable; 12-24-2018 at 07:38 PM.
#5
Yes!!! Actually... my inspection is due in 10 days. The last time I reset it with my scanner I drove it about 80 miles and brought it back for testing and it failed because all the systems hadn't reset. They told me to drive around for another 100 or so miles. I can't possibly drive the car close to 200 miles in 10 days. I will be lucky to do 75 miles tops.
#6
#7
My car in 10 miles or so most of the codes are ready. In New York our old cars do not have to have all readies. I think one or two can be not ready.
#8
Actually in New York at 25 years old is exempt. Most people don't check dmv website ,4th gens are coming up on exempt.
Last edited by krismax; 12-25-2018 at 03:23 AM.
#9
DO NOT CLEAR THE CODE WITH A SCANNER! When the exhaust shop installed my new cat and O2 sensor they cleared the light without me asking. It then failed inspection multiple times because the system was "not ready". I drove well over 100 miles and it still failed. It was a huge pain because I had no way of telling when to go back again. Finally on around the fourth attempt it passed. Just drive it around until the light goes off by itself and you should be good.
#10
DO NOT CLEAR THE CODE WITH A SCANNER! When the exhaust shop installed my new cat and O2 sensor they cleared the light without me asking. It then failed inspection multiple times because the system was "not ready". I drove well over 100 miles and it still failed. It was a huge pain because I had no way of telling when to go back again. Finally on around the fourth attempt it passed. Just drive it around until the light goes off by itself and you should be good.
#11
Also the rest of the systems will be "ready".
I asked the question about emissions inspection because the systems need a ready status to pass.
#12
Not clearing the code won't delay the Ready state, will it? It just lets you know when it's ready to pass, so you're not guessing? I normally clear things like O2 codes to see if they come back, but if that would delay things I'd be more careful close to smog test time...
#13
Clearing codes means that NO codes are"ready". No new codes does not mean that the car is ready right away. They might need 50 to 100 miles to get to the ready status.
#14
Clear the codes.
There is no mileage equivalent for emissions monitor readiness. Look up the drive cycle and repeat that until you have enough monitors ready.
Most scan tools can check system readiness status - check that before you take the car in for testing. Your state may allow a certain number of 'not ready' monitors.
There is no mileage equivalent for emissions monitor readiness. Look up the drive cycle and repeat that until you have enough monitors ready.
Most scan tools can check system readiness status - check that before you take the car in for testing. Your state may allow a certain number of 'not ready' monitors.
#15
Clear the codes.
There is no mileage equivalent for emissions monitor readiness. Look up the drive cycle and repeat that until you have enough monitors ready.
Most scan tools can check system readiness status - check that before you take the car in for testing. Your state may allow a certain number of 'not ready' monitors.
There is no mileage equivalent for emissions monitor readiness. Look up the drive cycle and repeat that until you have enough monitors ready.
Most scan tools can check system readiness status - check that before you take the car in for testing. Your state may allow a certain number of 'not ready' monitors.
Last edited by max ride 41; 12-27-2018 at 03:50 AM.
#16
So.. here is where I am at. I have put about 200 miles on the car since it failed emissions due to the fact that several of the systems were NOT READY.
I checked the codes with my OBDII scanner and they are STILL not ready.
About 80 miles ago I replaced the upstream O2 sensor because the check engine light is on throwing code P0174.
That light is still on and my scanner is still calling out P0174 so I am hoping I just need to drive it more.
What a pain in the butt. Do I have to result to bringing it to a repair shop? What would they do exactly? P0174 has a bunch of possible causes. Car runs perfect although just a few days ago it decided to stop going into 4th gear (overdrive). The only code present is P0174 and a bunch of systems that are reading NOT READY.
I am getting very frustrated about this. My emissions safety check is already passed due so I will have to pay the fine once its finally repaired. I just don't know what to repair to get this stupid SES light off.
I checked the codes with my OBDII scanner and they are STILL not ready.
About 80 miles ago I replaced the upstream O2 sensor because the check engine light is on throwing code P0174.
That light is still on and my scanner is still calling out P0174 so I am hoping I just need to drive it more.
What a pain in the butt. Do I have to result to bringing it to a repair shop? What would they do exactly? P0174 has a bunch of possible causes. Car runs perfect although just a few days ago it decided to stop going into 4th gear (overdrive). The only code present is P0174 and a bunch of systems that are reading NOT READY.
I am getting very frustrated about this. My emissions safety check is already passed due so I will have to pay the fine once its finally repaired. I just don't know what to repair to get this stupid SES light off.
#18
So.. here is where I am at. I have put about 200 miles on the car since it failed emissions due to the fact that several of the systems were NOT READY.
I checked the codes with my OBDII scanner and they are STILL not ready.
About 80 miles ago I replaced the upstream O2 sensor because the check engine light is on throwing code P0174.
That light is still on and my scanner is still calling out P0174 so I am hoping I just need to drive it more.
What a pain in the butt. Do I have to result to bringing it to a repair shop? What would they do exactly? P0174 has a bunch of possible causes. Car runs perfect although just a few days ago it decided to stop going into 4th gear (overdrive). The only code present is P0174 and a bunch of systems that are reading NOT READY.
I am getting very frustrated about this. My emissions safety check is already passed due so I will have to pay the fine once its finally repaired. I just don't know what to repair to get this stupid SES light off.
I checked the codes with my OBDII scanner and they are STILL not ready.
About 80 miles ago I replaced the upstream O2 sensor because the check engine light is on throwing code P0174.
That light is still on and my scanner is still calling out P0174 so I am hoping I just need to drive it more.
What a pain in the butt. Do I have to result to bringing it to a repair shop? What would they do exactly? P0174 has a bunch of possible causes. Car runs perfect although just a few days ago it decided to stop going into 4th gear (overdrive). The only code present is P0174 and a bunch of systems that are reading NOT READY.
I am getting very frustrated about this. My emissions safety check is already passed due so I will have to pay the fine once its finally repaired. I just don't know what to repair to get this stupid SES light off.
#19
never heard that one before
#22
UPDATE.... as of today 1-9-19. Oxy Sensor Fuse is good. SES light is still on. Code P0174 still.
I have driven about 100 miles since i replaced the O2 sensor. I have driven almost 300 miles since I failed emissions. I scanned my ECU and it still shows several systems NOT READY.
I am starting to think that P0174 is not being caused by my Upstream O2 sensor (the first one in line after the front exhaust manifold).
Car runs 100% perfect with no issues other than the SES light being on causing me to FAIL EMISSIONS!!!!
If I have intake or vacuum hose leaks I can't find any and there is no indication that I have them.
At this point I don't know what to check. Incredible. I have owned this car for almost 10 years with no issues at all other than general maintenance. Car has 180,000 miles on it and runs and drives like a new car. I prefer to drive it over my other 2 cars which are a 2013 and a 2015.
I may have to park it for good because I can't get this stupid light to turn off so I can pass emissions.
Any suggestions? Thanks..
I have driven about 100 miles since i replaced the O2 sensor. I have driven almost 300 miles since I failed emissions. I scanned my ECU and it still shows several systems NOT READY.
I am starting to think that P0174 is not being caused by my Upstream O2 sensor (the first one in line after the front exhaust manifold).
Car runs 100% perfect with no issues other than the SES light being on causing me to FAIL EMISSIONS!!!!
If I have intake or vacuum hose leaks I can't find any and there is no indication that I have them.
At this point I don't know what to check. Incredible. I have owned this car for almost 10 years with no issues at all other than general maintenance. Car has 180,000 miles on it and runs and drives like a new car. I prefer to drive it over my other 2 cars which are a 2013 and a 2015.
I may have to park it for good because I can't get this stupid light to turn off so I can pass emissions.
Any suggestions? Thanks..
#23
My original fuse looked good. But I had the same issue. I replaced it with a new fuse, then the problem went away.
Question..... please describe the driving conditions.
Do you drive the same route all the time?
Do you drive a combination of city and highway?
Question..... please describe the driving conditions.
Do you drive the same route all the time?
Do you drive a combination of city and highway?
#24
Engine idle is so smooth sometimes I think it stalled if it wasn't for the tach.
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