P0172 Code Fix: System Too Rich Bank 1 on the Ram 1500
A P0172 code on a Ram 1500 indicates the ECM has detected a long-term rich fuel condition on Bank 1 (the driver-side bank on V-engines), and on the Ram 1500 specifically the most common causes are a stuck-open EVAP purge valve continuously drawing fuel vapor into the intake, a contaminated or failing mass airflow sensor […]