Hyundai J2534 Software Checksum Error

Michael Mobile Technician Utah Posted   Latest  
Unsolved
Programming
2016 Hyundai Sonata GL 2.4L (F) 6-spd (A6MF2-1)
Programming Failure

When attempting to update late model Hyundai Sonata, I get a Checksum Error. The software shows an update but then drops the process with the checksum error message. Has anyone out there found a cure for this? I suspect that the issue is with the file not downloading or only partially downloading from the Hyundai server. I have tried with multiple pass-through devices and multiple computers. Windows 7 and Windows 10. 32 Bit and 64 Bit OS. The program was purchased quite recently but it is possible an update was made to the server or software. I just don't want to purchase the software again only to find out the problem is something else.

-Mike 

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Julio Owner/Technician
Maryland
Julio Default
 

I have found that kia and Hyundai j2534 app to not be reliable. Last week I was doing a Sportage that needed an update per a bulletin, I checked and verified that the calibration was out of date and bulletin applied to vehicle. Had a recent download of the J2534 app and it showed no update availble. I know the owner if the local Kia dealer, sent it to them and they did it with KDS. When…

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Ty Technician
Connecticut
Ty Default
 

What update are you trying to do? And why?

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Michael Mobile Technician
Utah
Michael Default
 

I don't have the TSB in front of me but it has to do with the trouble codes in the ECU. They replaced the tumble valve or manifold and it did not repair the problem. I am not doing the repair, just doing update for the shop. They gave me a TSB. File that the J2534 app. wants to update to. LFAGNC4EMC0K. -Mike

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Justin Mobile Technician
Utah
Justin Default
 

P200A

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Ty Technician
Connecticut
Ty Default
 

It's possible the PCM is seeing an aftermarket scanner as an "un-authorized device" and will simply not allow software updates.

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Ty: I didn't think the secure gateway came out until the Genesis G70. Guido

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Michael Mobile Technician
Utah
Michael Default
 

Ty, I don't think this is an issue as the software was specifically for the aftermarket and J2534 devices. We have programmed many before. My take is it is a problem with the database tied to the J2534 software or a variant that is not loaded.

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Ty Technician
Connecticut
Ty Default
 

As a former Hyundai tech, I don't know what aftermarket programming involves. There was a pretty narrow window of production that requires that update, so maybe the vehicle doesn't fall into the VIN range of that, and that's why it's getting flagged as an error. I'm assuming the VCM has been replaced? If the code doesn't return, don't lose sleep over the update.

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Mike: If I was going to speculate, it would be because of this. While I am not sure if the part number that your customer wishes to install is correct, this should make the point moot. HTH, Guido

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Michael Mobile Technician
Utah
Michael Default
 

The calibration is listed in that TSB so if it is a campaign then there should be no cost to the customer, correct? Also the customer just wanted an update, the ECU is the same one. Thanks, Mike

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Mike: Since it is a "Campaign", I'm wondering if it is restricted because of that. My take is that it is no cost to the customer. Guido

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Zachary Mobile Technician
Texas
Zachary Default
 

How many miles on the Car Mike? One of my customers had likely the same code relating to the tumble valve and the TSB for the update applied. They were able to get it covered under warranty but I don't recall if it was powertrain or federal emissions that it fell under. It was a 2015 Sonata with around sixty or seventy thousand miles on it if I remember correctly.

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Michael Mobile Technician
Utah
Michael Default
 

Not sure on miles. The calibration was listed in the campaign Guido sited so it should be covered.

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Adrean Diagnostician
California
Adrean Default
 

Hey mike how r u ? Any fix on this one running thru the same issue

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