gclerkin2019
Junior Member
I own a 2014 Ram 2500 6.4 Hemi. I got codes PO171 and 174. Can anyone help with just what those mean and what needs to be done to correct. Thank you
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A web search states bad 02 sensors on both banks, too lean.
gclerkin2019
Junior Member
Thank you. So a new o2 sensor?
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- 3.0 ecodiesel
Read this before buying parts
This site is pretty well detailed
This site is pretty well detailed
csuder99
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- Hemi 5.7
No, it means the O2 sensors detected a lean condition not that the sensors are bad. One way that can happen is that there is unmetered air added to the intake air e.g. a leak after the MAF. Another possible cause is the MAF itself reading low but that's less likely.
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