Possible glitch in hemi 6.4 software

[Wickenburg Geezer]

First tow on our 2020 Ram 2500 6.4 hemi. On second day out traveling from Arizona to Colorado the check engine light came on in southern Colorado. There was no degradation in performance or mileage experienced.

Called the Dodge dealer at my destination which was a couple hours away who told me he was backed up for almost two weeks. Dealer said he could get me in for a scan only in four days to determine if the issue was critical. The local NAPA garage at my destination ran a scan and came up with an air/fuel imbalance in bank 1.

After two days of driving around town at my destination the check engine light went off. I know that after a number of start/run/stop cycles without a fault that the light will go off. Called the dealer to cancel my appointment and I was told that they had been seeing a number of similar issues with the new 6.4 hemi engines. The service manager said that he expected there would be software update issued in the near future.

Anybody have any comments or information?

 

[NH RAM]

I have over 5,000 miles towing a travel trailer and fifth wheel in my 2019 between New Hampshire and South Dakota, with 13,000 miles overall- so the temps have been below zero up to 108 degrees with no CEL's. I look forward to seeing what others have to say.

 

[sandawilliams]

Bought my truck new in 2014. Started driving the 100 miles home and the check engine light came on half way there. Pissed off as others with new trucks would be I got home, unhooked the battery for 30 minutes, and the light hasn't came back since. (72K and 6 years)

 

[leroyg]

2019 Ram 2500 6.4 hemi 6k miles since January, towing RV monthly no issues.

 

[star_deceiver]

Once hit a large pothole while towing. Threw a code a little while later, air/fuel imbalance. Don’t remember the code number. Turns out, the MAF sensor is a twist lock in the intake tube.... the giant pothole knocked it free and it twisted 45 degrees. Turned it back to its locked position and erased the code, problem solved.

 

[Travelin Ram]

I have not experienced that nor read any similar reports.

 

[wgreggking]

Never had a code yet, 2017 6.4 62K miles. Congress AZ here, Howdy, Wickenburg neighbor.