Validate Checksum Failed. You will be unable to save or flash this file.

This isn't a bug in the software, and is perfectly normal.

When you read your PCM and then try to open the file with VCM Editor and receive this message here's what you should do:

1. Email the .hpt file as well as a VCM Suite infolog while connected to the vehicle in question to us at support at hptuners.com
2. we will review the file for integrety and if the checksums are correct & not disabled, missing or corrupt we will send you an update as soon as possible to fix this issue.
3. the fix will be included in all future shipped software and updates.

Fixing these issues are #1 when it comes to support so you can be assured that you have our full attention when we receive one of these emails.

This error is most common on Ford, Dodge & GM Alloytech(Bosch) pcm's & usually means its a new operating system we have yet to come across & we need to map the calibration for your use which can take several days or longer depending on the complexity of the operating system.

Thanks for your understanding and patience (we know what it is like to get something new only to have to wait another day to use it).

:cheers:
Support

Hoping my checksum was caused by SCT. I'll know tonight when I get home. If it was caused by SCT will there be a way to make it work or will I probably have to dump my custom engine tune and start from scratch?

Quote:

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Originally Posted by Dusty05

If it was caused by SCT will there be a way to make it work

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The answer to that is "probably yes"

That's good news :worship:

Can we prior SCT users get a stock file from you guys at hpt?

I honestly don't know if I have any stock files, remember these cars are 9-12 years old, most have already been modded in some way and the only files we get are from customers. So to answer your question, probably not.

Bill, I was thinking the same thing and was considering getting a stock reflash from the dealer to make absolutely sure there isn't an old superchips program on my pcm that I didn't know about, perhaps causing my checksum error. May also be the cause of a lot of these checksum errors on the Dodges.

Quote:

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Originally Posted by Dusty05

May also be the cause of a lot of these checksum errors on the Dodges.

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probably not, as stated in the post its normal, we likely just haven't done the def. Its the reason I made this post so people don't keep asking "I got a checksum error what do I do?".

ok, I'll stop worrying :)

So if the vehicle was flashed with a Superchips hand held we won't be able to read the tune? What if the vehicle is returned to stock?

Quote:

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Originally Posted by Pulse_GTO

So if the vehicle was flashed with a Superchips hand held we won't be able to read the tune?

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I can't see why you wouldn't be able to.

Just got this error on a 2011 Charger 5.7....info log and .hpt file sent.

Thanks guys!

2011 wrangler rubicon, file sent to support

2004 Chrysler PT Cruiser GT NGC3 with auto trans. Info log and file sent to support Friday. Thank you

2014 Challenger file sent to support several times since 1 week ago, still not supported, no reply at all :(

Quote:

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Originally Posted by monty007

2014 Challenger file sent to support several times since 1 week ago, still not supported, no reply at all :(

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http://www.hptuners.com/forum/showth...3-26-15-4-7-15

Rest assured, they are pouring into me, but I can only work through them as fast as they get to me.

Sorry, did not see that. Maybe an autoresponder on the support email adress next time as well ;-)

Quote:

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Originally Posted by monty007

Sorry, did not see that. Maybe an autoresponder on the support email adress next time as well ;-)

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I believe he did fix that for next time, all is good. I sent you a PM regarding your 2014 Challenger.

What is this "info log" you are looking for? I sent my file this evening and need it returned by the morning if possible.

Thanks.

Quote:

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Originally Posted by Mark@HPTuners

http://www.hptuners.com/forum/showth...3-26-15-4-7-15

Rest assured, they are pouring into me, but I can only work through them as fast as they get to me.

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Got mine back to me in a couple hours. Thanks Mark

I upload four stock Dodges to the tune repository yesterday .

As a side note, I upload my dodge caliber, but in the drop down menu you didn't have a caliber in it so I uploaded it to the neon drop down, but in comments I added its a caliber calibration

I sent a file today to support, not sure if I clearly mentioned it was a checksum issue but iam sure you'll know it is

Whats the turnaround on this issue

Quote:

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Originally Posted by JETURBO

I sent a file today to support, not sure if I clearly mentioned it was a checksum issue but iam sure you'll know it is

Whats the turnaround on this issue

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Monday is a national holiday, so you may not hear anything till Wednesday morning, Australian time. You need 2.25 access to use that file.

i emailed support this morning also with a validate checksum issue. I have a 2014 challenger stuck on the dyno waiting for a response.... any help ould be appreciated.

I have the engine, transmission, pcm, tipm, skim module, cluster and ign switch from a 2006 Ram 5.7 RFE545 installed in my 1966 Belvedere. It will run and drive buut I'd like to disable some dtc's and do a little bit of tuning. When I read the pcm it comes up with this checksum error and also locks up the pcm so I have do do a battery disconnect and reset it before it will run again. I have uploaded my tune file

i emailed support six hours ago also with a validate checksum issue.
any help would be appreciated.

Quote:

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Originally Posted by mobile2

i emailed support six hours ago also with a validate checksum issue.
any help would be appreciated.

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Support isn't active on the weekends, you should be hearing back from them soon.

Idk if I sent to correct people but having same issue on a 1998 ls1 Camaro. I posted in Tuning thread.

Sent a tune yesterday afternoon. What's the timeframe on this? Just have a truck on the dyno that needs to be delivered today.

I need tune a dodge Ram 2011 5.7 lt with Hemi engine. I try to read with NGC4 and NGC4A and shows checksum failed. I check with other tools and shows NGC5 for this models, Hptuners support this ECM ???

Thanks

Quote:

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Originally Posted by cris

I need tune a dodge Ram 2011 5.7 lt with Hemi engine. I try to read with NGC4 and NGC4A and shows checksum failed. I check with other tools and shows NGC5 for this models, Hptuners support this ECM ???

Thanks

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Read it as an NGC4A and send the file to support.

Quote:

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Originally Posted by Stangguy

Sent a tune yesterday afternoon. What's the timeframe on this? Just have a truck on the dyno that needs to be delivered today.

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Time-frames can be hard to pinpoint but typically, you should receive a response within 24-48 hours or so

Quote:

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Originally Posted by Mark@HPTuners

Time-frames can be hard to pinpoint but typically, you should receive a response within 24-48 hours or so

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Save for weekends and holidays.

ie if you email us on Friday at 6pm you likely won't recieve a response until monday-tuesday of the following week.

I ready did that buddy, I send two files, with NGC4 and NGC4A. thanks

so I have a 2016 dodge charger scat pack and im looking to do the initial read of the pcm to send in for pcm service to unlock. I did the read but it came up checksum failed. would it be saying that because the factory pcm is not unlocked? or am I doing something wrong.
Performed read as gpec2a

Quote:

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Originally Posted by TURBODAN101

so I have a 2016 dodge charger scat pack and im looking to do the initial read of the pcm to send in for pcm service to unlock. I did the read but it came up checksum failed. would it be saying that because the factory pcm is not unlocked? or am I doing something wrong.
Performed read as gpec2a

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The read is likely fine, it just needs to be defined in our software. If you would like to be sure the read is okay before you send the PCM in... send the file to support. We can double check if for you.

cool. thanks a lot.

Just got the "Validate Checksum Failed" with two separate PCM's using my laptop and Windows tablet. Through the OBD II port and an offboard interface.

One PCM is stock, untouched. The other is one I've flashed over a dozen times. The only thing that has changed is, upgrading to HPT 3.0

Emailed support with .hpt file and infolog. Waiting for reply.

2000 Grand Prix GTP

Did this and got a response back saying this is not a supported vehicle. Isn't this what you do to add a vehicle to the supported list? The ecu is supported and the 2005+ versions of the vehicle are supported.

Yes, If we believe we can support a vehicle in a timely manner. If its some oddball ecm that we don't support you will receive a response that it is not supported.

I guess the thing that confuses me is, mine is definitely a supported vehicle. I get the error when reading a PCM that was previously written a dozen times using HPTuners and nothing else. I was surprised to see an error message using a familiar setup to access a licensed PCM.