clearing a code by pulling a fuse ?
Thread Starter
Le Mans Master
Joined: Jun 2009
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clearing a code by pulling a fuse ?
I understand you can clear a CEL notification by pulling the power from the ECU for 15 minutes. Can this be done by pulling a specific fuse or can this only be done at the battery connection ?
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
It may turn the dash light off but the code will still be in history. I echo post#3. Do you know what the code is? If it's still "bad", it'll come right back.
Elmer
Elmer
Thread Starter
Le Mans Master
Joined: Jun 2009
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code P0101 MAF . I'm thinking it might be to an over oiled airfilter element on my KB, so I ran some CRC MAF Cleaner thru the sensor. I want to clear the CEL and see if it returns.
Former Vendor
Joined: Jun 2009
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From: Tampa FL
Lol thats a my bad 
, im spending to much time on the Mustang Forums 
. Did you clean the filter lately? It could also be that the ECM is more airflow then it should, when is performs a check on the Throttle Body.
, im spending to much time on the Mustang Forums . Did you clean the filter lately? It could also be that the ECM is more airflow then it should, when is performs a check on the Throttle Body.
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Thread Starter
Le Mans Master
Joined: Jun 2009
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Yes, it was recently cleaned and re-oiled. I also cleaned the MAF aftr first recieving the MAF code.
Drifting
Joined: Jul 2005
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From: Austin TX
Remember one thing about doing this. if there is a true problem, pulling the fuse can only clear the problem. the problem will still exist. its like sweeping dirt under a rug. The dirt will just not be seen, but it is still there. best thing to do is find out what the code is and what it means and find a real fix. not sure what mods you have and what tune you have and what is controlled by the ECU, etc, but you dont want to give it problems to where it wont make everything run optimially and as it should with the tune, etc. just my $.02
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Le Mans Master
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I believe you still have to "clear" the CEL or code after the repair is made (I believe).
In my case, my belief is that an over oiling of my Killer Bee filter may have coated the MAF sensor so I cleaned it with CRC MAF cleaner and wanted to clear the code and CEL to see if it fixed the issue
In my case, my belief is that an over oiling of my Killer Bee filter may have coated the MAF sensor so I cleaned it with CRC MAF cleaner and wanted to clear the code and CEL to see if it fixed the issue
Drifting
Joined: Jul 2005
Posts: 1,634
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From: Austin TX
ok, may have misunderstood all the other post but that makes sense. i am not really sure if you have to clear the code after the repair of if they CEL\ECU\BCM or whatever is smart enough to know the problem has been resolved (knowing computers, probably not). The best thing I have found to clear codes is by pulling a cable from the battery. I am getting SAH (yes i have gone in for the recall) errors and SCL errors. I pull a cable, they go away. being that they are both still there, i do get the messages back once in a while. So with that info, I will be honest and say from my experience, it can go either way. I know, not too much help from this end, but it could give you a lead. I will let you know that I have read in the tech forums of people putting on CAI or changing to a different airfilter and throwing codes. They also said that they have changed back to their stock filter\system and the codes will go away. from a computer tech's point of view, you may want to try throwing the stock unit back on if you still have it and see what happens. I know its a pain, but its a start.
Thread Starter
Le Mans Master
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Yep, my Killer Bee is causing my P0101 MAF error...after over a year and a half of install time 
Put my original airbridge and filter back on with the same MAF sensor and the error/CEL has gone away.
Put my original airbridge and filter back on with the same MAF sensor and the error/CEL has gone away.
Thread Starter
Le Mans Master
Joined: Jun 2009
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UPDATE:
I recently purchased the full version of Rev2 program for the iPhone, which allows you to clear any stored codes and to review emission readiness status values. You have to purchase an ODBCII WiFi interface to communicate with the iPhone app, but this app will also allow you to perform some modest data logging with an export feature !!!
I used this app to review and clear any codes I had stored in the ECU and to monitor IAT's, timing, fuel trims, and throttle position when at the track.
Cool little app if you have an iPhone.
http://www.devtoaster.com/products/rev/
I recently purchased the full version of Rev2 program for the iPhone, which allows you to clear any stored codes and to review emission readiness status values. You have to purchase an ODBCII WiFi interface to communicate with the iPhone app, but this app will also allow you to perform some modest data logging with an export feature !!!
I used this app to review and clear any codes I had stored in the ECU and to monitor IAT's, timing, fuel trims, and throttle position when at the track.
Cool little app if you have an iPhone.
http://www.devtoaster.com/products/rev/
Race Director
Joined: Mar 2005
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From: Southampton NJ
UPDATE:
I recently purchased the full version of Rev2 program for the iPhone, which allows you to clear any stored codes and to review emission readiness status values. You have to purchase an ODBCII WiFi interface to communicate with the iPhone app, but this app will also allow you to perform some modest data logging with an export feature !!!
I used this app to review and clear any codes I had stored in the ECU and to monitor IAT's, timing, fuel trims, and throttle position when at the track.
Cool little app if you have an iPhone.
http://www.devtoaster.com/products/rev/
I recently purchased the full version of Rev2 program for the iPhone, which allows you to clear any stored codes and to review emission readiness status values. You have to purchase an ODBCII WiFi interface to communicate with the iPhone app, but this app will also allow you to perform some modest data logging with an export feature !!!
I used this app to review and clear any codes I had stored in the ECU and to monitor IAT's, timing, fuel trims, and throttle position when at the track.
Cool little app if you have an iPhone.
http://www.devtoaster.com/products/rev/
