Issue with OBD2 port 2003 civic lx
#1
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Hello, I recently purchased a 2003 civic to use as a commuter car. Everything was fine until I hit about 50 miles on the car and it hit a CEL. Oh well. So I went ahead and tried to scan it with codes at Advance today. The car would not scan. I figured it would be a issue with the scanner. So I grabbed a friends scanner and blue tooth scanner. Both would not work. My friends bluetooth scanner however had enough power to power on and register but not work.
My Cigarette adapter works. I checked all fuses under the the hood and they look good. Any idea on how to remedy this? The strangest part is that after it leaves the check engine light again? But still cannot OBD2 again.... any ideas on how I could get my obd2 port working again?
Thanks!
My Cigarette adapter works. I checked all fuses under the the hood and they look good. Any idea on how to remedy this? The strangest part is that after it leaves the check engine light again? But still cannot OBD2 again.... any ideas on how I could get my obd2 port working again?
Thanks!
#2
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
until I hit about 50 miles on the car and it hit a CEL.
The car would not scan.
Or do you mean the code reader powers up but cannot communicate with the engine computer?
Fuse #9 (10A) in the engine compartment box supplies power to the DLC.
#3
Re: Issue with OBD2 port 2003 civic lx
I am experiencing the problem above discribed by Ezone, gauges go haywire and loss of power above 3000 rpms. Along with an inability for the obd2 to communicate with my ECU. Any ideas?
#4
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Re: Issue with OBD2 port 2003 civic lx
Yes, your ECU is fried and it’s in backup mode with only works till 3000 rpm.
Before replacing it, be sure to remove your alternator and throughly clean the mounting points on both the alt and the engine.
Before replacing it, be sure to remove your alternator and throughly clean the mounting points on both the alt and the engine.
#5
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
Search the forum for all sorts of info on this.
#6
Re: Issue with OBD2 port 2003 civic lx
I bought a used ECU and tried to have it flashed at the dealer but they explained that because of the communication issue they were unable to retrieve the information they needed to flash the one I had bought. Is there an alternate way of flashing the needed information onto the ECU I bought? Or if not, what would be the next step from here?
#7
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
what would be the next step from here?
Otherwise, you'll just ruin the next PCM.....which can get pretty damn expensive.
#8
Re: Issue with OBD2 port 2003 civic lx
Looking at the alternator, I found that the stud connecting it to the tensioner bracket is snapped. So from what you've said that is likely to have caused the odd voltage shorting out and burning up my ECU?
#9
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
Fix that. Correctly.
If you're insanely lucky the PCM might work again after you get that fixed. I wouldn't hold my breath though, usually once a PCM has lost communication, it's junk.
#10
Re: Issue with OBD2 port 2003 civic lx
If after I fix the alternator the ECU doesn't work. How would I go about flasing a new ECU concidering the communication issue? or will fixing the alternator allow me to retrieve the information nessicary to flash a new one?
#11
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
Hmm. Extracting info from the old unit.....It's not absolutely necessary to do it that way.
I wonder if they are having a rookie do it.
I can do it as long as I have all of your keys so they all can be registered during the programming.
I wonder if they are having a rookie do it.
I can do it as long as I have all of your keys so they all can be registered during the programming.
#13
If you think a good mechanic is expensive, try hiring a bad one
#15
If you think a good mechanic is expensive, try hiring a bad one
Re: Issue with OBD2 port 2003 civic lx
From what I can see, about 28 hours away from you
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