P0102 & P0603
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Posting Guru
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From: Anderson, SC
P0102 & P0603
Anybody know what these codes mean? I mean I have the explanation my insight gives me (P0102: MAF Sensor Circuit Low Input, P0603: Internal control module Keep Alive Memory error) but I don't know that the useful interpretation of that is. The truck seems to be running fine though.
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Posting Guru
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From: Anderson, SC
That's what I was going to do but I was ju generally curious if anybody knew what normally causes these codes.
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
Gearloose Code Reading Rule #1
Unless it is a "drop dead" code, like "your engine is about to melt" (e.g. EGT over 1600 degrees!),
ALWAYS treat code as suspect --- caused by glitch.
Erase the code, log the conditions it happens under.
Then see if it comes back.
If it still keeps coming back --- after 2X,
Reset the computers and see..
Still comes back?
You got a real code..
Unless it is a "drop dead" code, like "your engine is about to melt" (e.g. EGT over 1600 degrees!),
ALWAYS treat code as suspect --- caused by glitch.
Erase the code, log the conditions it happens under.
Then see if it comes back.
If it still keeps coming back --- after 2X,
Reset the computers and see..
Still comes back?
You got a real code..
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
PS
I have a 6.0 that threw more codes than the Old Testament...
At the end of the day.. the only real thing I fixed:
New EGR valve, cleaned carbon particles, cleaned turbo of rust, new alternator, a few minor things...
Then regular Italian tuneup to blow crap out....
Now ... no code since!
I have a 6.0 that threw more codes than the Old Testament...
At the end of the day.. the only real thing I fixed:
New EGR valve, cleaned carbon particles, cleaned turbo of rust, new alternator, a few minor things...
Then regular Italian tuneup to blow crap out....
Now ... no code since!
Thread Starter
|
Posting Guru
Joined: Jun 2009
Posts: 1,373
Likes: 0
From: Anderson, SC
Gearloose Code Reading Rule #1
Unless it is a "drop dead" code, like "your engine is about to melt" (e.g. EGT over 1600 degrees!),
ALWAYS treat code as suspect --- caused by glitch.
Erase the code, log the conditions it happens under.
Then see if it comes back.
If it still keeps coming back --- after 2X,
Reset the computers and see..
Still comes back?
You got a real code..
Unless it is a "drop dead" code, like "your engine is about to melt" (e.g. EGT over 1600 degrees!),
ALWAYS treat code as suspect --- caused by glitch.
Erase the code, log the conditions it happens under.
Then see if it comes back.
If it still keeps coming back --- after 2X,
Reset the computers and see..
Still comes back?
You got a real code..
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
Disconnect batteries
Turn on headlight switch to "on" and dimmer to "max".
Go watch TV for 30 min
These steps must be followed to ensure that the capacitors holding the volatile memories in each of the black boxes be discharged.
Voila.
Note - your transmission will shift rough as it has to relearn the shift.
Turn on headlight switch to "on" and dimmer to "max".
Go watch TV for 30 min
These steps must be followed to ensure that the capacitors holding the volatile memories in each of the black boxes be discharged.
Voila.
Note - your transmission will shift rough as it has to relearn the shift.
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Thread Starter
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Posting Guru
Joined: Jun 2009
Posts: 1,373
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From: Anderson, SC
Disconnect batteries
Turn on headlight switch to "on" and dimmer to "max".
Go watch TV for 30 min
These steps must be followed to ensure that the capacitors holding the volatile memories in each of the black boxes be discharged.
Voila.
Note - your transmission will shift rough as it has to relearn the shift.
Turn on headlight switch to "on" and dimmer to "max".
Go watch TV for 30 min
These steps must be followed to ensure that the capacitors holding the volatile memories in each of the black boxes be discharged.
Voila.
Note - your transmission will shift rough as it has to relearn the shift.
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Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
ok the Maf code means that more then likly the maf senor is or was left on pluged. that the sensor on the air box.
the p0603 is just a code that basicly mean the pcm was reset to do low voltage or the like.
the p0603 is just a code that basicly mean the pcm was reset to do low voltage or the like.
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
cheezer..
If that is the case... plug the MAF back solves that code.
0603 computer reset to clear any funky glitches that MIGHT be there.
Charge up batteries, verify alternator good...
Voltage test to ensure electrical system in top shape for winter..
Then it is good to go.
If that is the case... plug the MAF back solves that code.
0603 computer reset to clear any funky glitches that MIGHT be there.
Charge up batteries, verify alternator good...
Voltage test to ensure electrical system in top shape for winter..
Then it is good to go.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
cheezer..
If that is the case... plug the MAF back solves that code.
0603 computer reset to clear any funky glitches that MIGHT be there.
Charge up batteries, verify alternator good...
Voltage test to ensure electrical system in top shape for winter..
Then it is good to go.
If that is the case... plug the MAF back solves that code.
0603 computer reset to clear any funky glitches that MIGHT be there.
Charge up batteries, verify alternator good...
Voltage test to ensure electrical system in top shape for winter..
Then it is good to go.
Thread Starter
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Posting Guru
Joined: Jun 2009
Posts: 1,373
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From: Anderson, SC
So if I made sure the MAF sensors is plugged in good and it still keeps coming on, then what does that mean?