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Author Topic: Resetting the computer 2004 Ram 1500 5.7  (Read 6310 times)

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Offline drumbok5

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Resetting the computer 2004 Ram 1500 5.7
« on: August 5, 2010, 07:26:15 PM »
I have a 2004 Ram 1500 with 5.7 Hemi.  I recently took it to get smog checked in California (my first time doing this by the way as I'm from PA).  The check engine light was on and the truck failed because of OBD code P0406 (EGR sensor A ckt high).  I went home, disconnected the battery, removed the EGR and cleaned the heck out of it with carb cleaner, re-installed it, and the check engine light has been off for 5 days.  I took it back to the smog station with no "Check Engine Light" on and the truck failed again.  The techinician said although there were no actual error codes related to the EGR anymore, the trucks monitoring system had probably not completely reset itself.  The truck is running as fine as it ever was and I have driven it about 30-60 miles since i cleaned the EGR (with the batt disconnected).  What do I do now!?!? Please help!  I need to have this thing pass the smog test soon.

Offline Dodgeboy426

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #1 on: August 6, 2010, 03:18:52 AM »
Simple PCM/ECM Reset:

1. Disconnect the Positive side of the battery.

2. put the key in the ignition and hold in the "START" position for 30 seconds.

This drains the back up memory power and will let it start code free ( code will still be stored in PCM/ECM history though, but will not effect your test)

DB426  ;D
« Last Edit: August 6, 2010, 03:20:38 AM by Dodgeboy426 »
'99 Ram, 5.2L, Custom Jasper 46RE, 6" BDS Suspension lift, 36x12.5x16" Baja Claws, MSD wires and coil,K & N, Custom "Preditor" bush/winch bumper, DWC Throttle Body, Electric Fans with custom shroud, Champion winch, the "Wall of Sun" 1,000,000 extra candle power of light!

Offline DODGEBOYS

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #2 on: August 6, 2010, 02:26:04 PM »
NOT / it hasta go thru an OBD2 drive cycle were ALL the emissions monitors RUN / in normal driving can take anywere from 300 to 500 miles to reset / as a MASTER OBD2 tech l can do a drive cycle in 45 minutes and 10 miles and each make has a different drive cycle / till ALL the monitors run it,ll still come up as P1000 / which wont turn the check "engine" light on but will get him rejected
put your truck info HERE
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Offline Dodgeboy426

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #3 on: August 6, 2010, 04:46:42 PM »
NOT / it hasta go thru an OBD2 drive cycle were ALL the emissions monitors RUN / in normal driving can take anywere from 300 to 500 miles to reset / as a MASTER OBD2 tech l can do a drive cycle in 45 minutes and 10 miles and each make has a different drive cycle / till ALL the monitors run it,ll still come up as P1000 / which wont turn the check "engine" light on but will get him rejected


Ughh, I missed you too DODGEBOYS, pls just listen 1 sec ok? :P

1 my statement WILL WORK On the assumption that whatever problem has been rectified, period.

if you accidently unplug a sensor, throw a code, shut off vehicle, reinstall said sensor, do the battery/start trick (and hold it down in the start position long enough) the  check light will be out, it will NOT have an issue when scanned, BUT WILL show it in the history Maybe. I have 2 OBDII trucks, and work on many more, including Hemis. it works.



And DODGEBOYS, why no love buddy? Didn't you miss me? We don't wanna get into that whole qualifications fight thing again do we? we did that 5-6 years ago and life is too short for school yard pissing contests.

Although I am always open to polite, respectful, and constructive critism of any info/ideas I post ;)

DB426 ;D
'99 Ram, 5.2L, Custom Jasper 46RE, 6" BDS Suspension lift, 36x12.5x16" Baja Claws, MSD wires and coil,K & N, Custom "Preditor" bush/winch bumper, DWC Throttle Body, Electric Fans with custom shroud, Champion winch, the "Wall of Sun" 1,000,000 extra candle power of light!

Offline DODGEBOYS

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #4 on: August 7, 2010, 06:05:14 AM »
untill the P1000 clears and ALL monitors run and the scanner says "P0000" he will still get rejected / plus on a DODGE it will come up that the battery was disconnected in the last 50 key cycles as part of the P1000 / l have a OBD2 emissions readiness scanner just for do,in pre-inspections / its pretty easy to use / plug it in and theres three lights red- yellow - green / if its green your good to go / if its yellow it tells you which OBD2 monitors have not run / weather it be Evap - egr- 02 sensor - 02 heater / if its red then it has codes and gives you them

l,m NOT try,in to piss in anybodys corn flakes / just give correct info

disconnecting the battery and turning the key on does erase the memory / but then it hasta relearn and ALL monitors hafta run / thats why he did what you said and still got rejected
put your truck info HERE
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Offline Dodgeboy426

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #5 on: August 7, 2010, 06:27:18 AM »
he did not do as I said, he only disconnected the battery, not the start part as well.

if all you do is change the part the light will go out and it will take 50 clean cycles like you said...

do the start trick and it will be fine right away.

this info is from Dodge by the way. and i've verified this with a Genisys scan tool and a snapon scan tool.

DB426
'99 Ram, 5.2L, Custom Jasper 46RE, 6" BDS Suspension lift, 36x12.5x16" Baja Claws, MSD wires and coil,K & N, Custom "Preditor" bush/winch bumper, DWC Throttle Body, Electric Fans with custom shroud, Champion winch, the "Wall of Sun" 1,000,000 extra candle power of light!

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #6 on: August 7, 2010, 06:42:08 AM »
never heard of it but l,ll give it a try next week on a 05 Ram with a P0455 large evap leak / which is gonna either be a cracked hose or vent [ LDP ] solenoid
put your truck info HERE
MOPAR TO YA! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
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DO NOT use the site IM,s to contact me  l have them turned OFF

Offline Dodgeboy426

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #7 on: August 7, 2010, 08:00:22 AM »
never heard of it but l,ll give it a try next week on a 05 Ram with a P0455 large evap leak / which is gonna either be a cracked hose or vent [ LDP ] solenoid


Seriously it works, but you must do the hold the key in the start position for 30 seconds, I usually hold it up to 1 minute to be sure. it will reset everything and allow a clean start, no codes
'99 Ram, 5.2L, Custom Jasper 46RE, 6" BDS Suspension lift, 36x12.5x16" Baja Claws, MSD wires and coil,K & N, Custom "Preditor" bush/winch bumper, DWC Throttle Body, Electric Fans with custom shroud, Champion winch, the "Wall of Sun" 1,000,000 extra candle power of light!

Offline DODGEBOYS

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #8 on: August 10, 2010, 05:32:22 AM »
l will admit that it had NO codes and not even the P1000 or the battery disconnect / but it was NOT OBD2 emissions ready because not all the monitors had run / below is what anybody can find on google if the use the key word " OBD2 readiness monitors " for what hasta happen to your vehicle for it to pass a state inspection and Cali and the state of MA are the worst / the PDF below is for the state of NY and is the only one l could copy but it explains pretty much everything
put your truck info HERE
MOPAR TO YA! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
ramchargercentral@hotmail.com
DO NOT use the site IM,s to contact me  l have them turned OFF

Offline Dodgeboy426

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Re: Resetting the computer 2004 Ram 1500 5.7
« Reply #9 on: August 10, 2010, 12:02:49 PM »
l will admit that it had NO codes and not even the P1000 or the battery disconnect / but it was NOT OBD2 emissions ready because not all the monitors had run / below is what anybody can find on google if the use the key word " OBD2 readiness monitors " for what hasta happen to your vehicle for it to pass a state inspection and Cali and the state of MA are the worst / the PDF below is for the state of NY and is the only one l could copy but it explains pretty much everything


Ok, We both get points then  ;)

I knew it worked because we've used it.


But now that I think about it all the vehicles had a weeks run time between having the codes cleared and then going for their inspection so that would give them enough run time.

Thanks for the info.
'99 Ram, 5.2L, Custom Jasper 46RE, 6" BDS Suspension lift, 36x12.5x16" Baja Claws, MSD wires and coil,K & N, Custom "Preditor" bush/winch bumper, DWC Throttle Body, Electric Fans with custom shroud, Champion winch, the "Wall of Sun" 1,000,000 extra candle power of light!