4th gen pcm reset

quietpeen · Jun 1, 2012

does anybody know if you can reset the pcm on 4th gen like you could on 3rd gen. I'm not talking about disconnecting the battery. I'm talking about where you pull the pcm fuse (think it was #23 on my 05) and then turn and hold the key in the start position for like 15 seconds till you hear a beap.

Trupiano · Jun 1, 2012

Researched a little and found the steps.

1st Way:

1) With the key out of the ignition
2) Disconnect the Negative battery Cable.
3) Put the key in the ignition and turn it as if you where trying to the START it.
4) Release the key and leave it in the “ON” position and let it sit for 10- 15 min
5) Remove key from the ignition.
6) Re-attach the negative battery cable.
7) DO NOT TOUCH THE THROTTLE when starting the truck for the first TWO times!!!
8) Start truck and let idle till it reaches operating temperature.
9) Turn truck off for 5-10 seconds.
10) RE-START the truck but DO NOT TOUCH THE THROTTLE!
11) Let the truck return to normal idle (500-600 RPM’s)
12) Turn truck off, and then start her up and take her for a LIGHT test drive… NO WOT testing yet.
13) After driving around the block letting your computer LEARN the new air flow turn her off one last time…
14) Fire her up and drive her the way you want.

The second way:

1) Pull fuse #19 or #23 or #31 (be very careful here - vehicle year dependent)
2) Close door and buckle seatbelt (technically you don't have to buckle the seatbelt, but it helps to stop all unnecessary chimes)
3) Put key in ignition and turn to "on" and wait until all chimes stop (on...not start!)
4) Turn key to start and hold until you hear 2 chimes (I think it was about 15 seconds or so)
5) Turn key off
6) Re-install fuse
7) You're good to go

quietpeen · Jun 1, 2012

excellent so you can. Thanks!!!!

KsBowhunter · Jun 1, 2012

How useful would this be each time you add a significant mod? Like exhaust, cai, etc....

I can't help but to wonder if it would help your truck get the most out of each mod you do. But I might just be daydreaming...

quietpeen · Jun 1, 2012

i doubt it is useful for each and every mod, but can't hurt

KsBowhunter · Jun 1, 2012

Ya I figured it might only really help on CAI, exhaust, headers, etc...

harr118 · Jul 5, 2012

what does this do when you reset it?

LB3711 · Jul 5, 2012

it will only work till the truck relearns again. More than likely it won't relearn to a performance level. Worth a shot though.

7suerte · Jun 3, 2019

Would this work on my pcm? I recently got state reffed (emissions test/smog) and they failed my truck. The note they wrote is this : “ECU programming is incorrect. Customer needs to have the CAL ID and CAL CVN (ECU programming) Corrected for a 2013 Ram 1500 EFN: DCRXTO5,7VPO CA certified.”
My pcm has been flashed before, I had a hand tuner tune on my truck and it ended up freezing my pcm so i sent it back to get it flashed and once i got my truck smogged they failed it. Not sure what to do to fix my pcm, thank you.

Texjim · Jun 8, 2019

Amazing, I will try this and see what the result is.

joshuaeb09 · Jun 8, 2019

7suerte said:
Would this work on my pcm? I recently got state reffed (emissions test/smog) and they failed my truck. The note they wrote is this : “ECU programming is incorrect. Customer needs to have the CAL ID and CAL CVN (ECU programming) Corrected for a 2013 Ram 1500 EFN: DCRXTO5,7VPO CA certified.”
My pcm has been flashed before, I had a hand tuner tune on my truck and it ended up freezing my pcm so i sent it back to get it flashed and once i got my truck smogged they failed it. Not sure what to do to fix my pcm, thank you.

You might have to go to a dealer and get the latest OEM calibration flashed on it. If they're failing for the CAL ID rather than what comes out of the tail pipe then CA has gotten worse than I thought...

4th gen pcm reset

quietpeen

Senior Member

Trupiano

Registered User

quietpeen

Senior Member

KsBowhunter

Senior Member

quietpeen

Senior Member

KsBowhunter

Senior Member

harr118

Member

LB3711

Senior Member

7suerte

Junior Member

Texjim

Member

joshuaeb09

Senior Member

Similar threads

Latest posts

Staff online

Members online

Forum statistics

Share this page