Check engine light while towing?

Wickenburg Geezer

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2020 Ram 2500 6.4 hemi 11K miles

I've had a check engine light come on for a second time while towing. Here is the scenario: Doesn't come on until second or third day. Running 65 mph plus or minus. Both times it came on after a very long gradual uphill pull of 50-75 miles at altitude.

First time I found a local NAPA store that was able to pull a code saying air fuel mixture bank 2. He didn't have the updated software to give me the number. Both times it has cleared after unhitching and driving for a while. Talked with selling dealer the first time and he said it was probably a software bug and not to worry. Anybody got a clue?
 

Riccochet

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I would take it to a dealer and have it checked. If you have a bad injector causing a lean situation, that could be catastrophic to the engine.
 

Farmer Fran

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I would not mess around with this, go have it looked at.
 

2019RamInSC

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2020 Ram 2500 6.4 hemi 11K miles

I've had a check engine light come on for a second time while towing. Here is the scenario: Doesn't come on until second or third day. Running 65 mph plus or minus. Both times it came on after a very long gradual uphill pull of 50-75 miles at altitude.

First time I found a local NAPA store that was able to pull a code saying air fuel mixture bank 2. He didn't have the updated software to give me the number. Both times it has cleared after unhitching and driving for a while. Talked with selling dealer the first time and he said it was probably a software bug and not to worry. Anybody got a clue?
Software Bug? Really? Was that the salesman talking? Or the Service Writer? Sometimes just as bad. If it was tech/mechanic. Go to a different dealer.

Good Luck
 

Daw14

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Software Bug? Really? Was that the salesman talking? Or the Service Writer? Sometimes just as bad. If it was tech/mechanic. Go to a different dealer.
.
 
Last edited:

Daw14

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Go to a dealer ,have it documented incase of a serious issue down the road.
 

Dodge 1500 4X4

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Bank 2 is the even numbers 2,4,6,8 a possible injector is causing a lean situation and the O2 sensor is picking it up, Don't run it like this have the dealer check it out, This could be a catastrophic situation.
 

18MegaRam

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My CEL came on while towing my 5th wheel. Along with ABS light and traction control. Then I lost the trailer brakes. It's been at the Dealer for 10 weeks now, and they still can't figure it out. Stellantis engineers and Ram Cares are also involved. They have replaced the ABS module twice, and are about to replace it a third time. What do they say about doing the same thing over and over, and expecting different results? The truck is a 2018 and still under warranty.
Document your issues in case it gets worse.
 

Bearcatrp

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Check your lemon law in your state. If your within the timeline, make them eat it!
 
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