P0128
- Thread starter Danny M
- Start date
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Sandevino
Senior Member
- Joined
- Apr 18, 2020
- Posts
- 1,309
- Reaction score
- 1,844
- Location
- North Texas
- Ram Year
- 2023
- Engine
- HEMI 5.7 eTorque
It’s an engine coolant temp code so not likely.
nlambert182
Senior Member
- Joined
- Dec 28, 2022
- Posts
- 2,653
- Reaction score
- 4,607
- Location
- Huntsville, AL
- Ram Year
- 2018
- Engine
- 6.7 Cummins
It is POSSIBLE that the issue stems from something with the ECM, so it's POSSIBLE that it popped that code and is really an ECM issue vs a low temp issue. Not likely but it's a possibility. Best bet is to take it to a mechanic and let them diagnose it. If the code really is JUST for a low temp issue (cooling fan stuck on, thermostat failure, etc..) the truck should still run.
