I recently purchased a 2016 Ram 2500 Cummins with 195,000+ miles. I went to a dealer to get the commercial settings set to default. While there I told them to do the Cummins recall. Something went wrong and it triggered check engine light for DEF system. They ordered me another PCM and installed it and redid the recall. 300 miles later the Def system see dealer popped up again. I have a P208B Reductant pump control range/ performance and a P20E8 Reductant pressure too low codes. Has any one had any problems similar after doing the recall? Any scan tools that can read the pressure and such without going to a dealer? Very discouraged the pump retails for $2600. Thanks for any helpful responses.
Ram Heavy Duty Forum
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DEF system low pressure codes
- Thread starter KevinM
- Start date
Are you sure the truck isn't deleted? Sure sounds like a factory PCM flash overwrote a tune.
The system is all there, not deleted. I never should have done the update.