2018 Ram 4500 Chassis Cab catalytic converter

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Page 66 of 298

Ram 4500 Chassis Cab 2018  User Guide Certain conditions, such as a loose or missing
gas cap, poor quality fuel, etc., may illumi-
nate the light after engine start. The vehicle
should be serviced if the light stays on
through several typ

Page 71 of 298

Ram 4500 Chassis Cab 2018  User Guide ONBOARD DIAGNOSTIC SYSTEM —
OBD II
Your vehicle is equipped with a sophisticated
Onboard Diagnostic system called OBD II.
This system monitors the performance of the
emissions, engine, and transmiss