Chrysler · Dodge · Jeep · Ram
MOPAR OBD-II
DRIVE CYCLE GUIDE
Readiness guidance for Chrysler, Dodge, Jeep, and Ram gasoline and diesel vehicles, with monitor-specific and regeneration cautions.
Drive cycle at a glance
Cold start
If required
City warm-up
Gentle acceleration
Steady cruise
40–60 mph
Closed-throttle coast
When safe
Recheck monitor
Use model-specific data
START WITH THE INCOMPLETE MONITOR
Chrysler, Dodge, Jeep, and Ram procedures are usually monitor-specific. Stellantis service information uses scan-tool readiness status to identify what has not completed, then lists the operating conditions needed for that monitor.
Common gasoline readiness pattern
- Begin with a cold engine if the monitor requires a cold soak.
- Start without unnecessary throttle and allow a short idle.
- Use gentle acceleration and normal city driving until fully warm.
- Maintain a steady 40–60 mph cruise when safe and legal.
- Include safe closed-throttle deceleration and normal idle periods.
- Complete more than one trip if the enabling conditions do not occur together.
EVAP, catalyst, and oxygen-sensor monitors
EVAP may require a mid-range fuel level, acceptable temperature, a long soak, and a key-off leak test. Catalyst and oxygen-sensor monitors generally need full operating temperature, stable fuel control, steady cruise, and deceleration without related faults.
Ram and Jeep diesel readiness
Diesel vehicles add DPF, NMHC catalyst, SCR/NOx, exhaust-gas-sensor, boost-pressure, EGR, and fuel-system monitors. Stellantis guidance notes that a vehicle may require extended driving in varied conditions after the PCM is flashed, replaced, or cleared.
- Check DEF quality and level where applicable.
- Confirm there are no active or pending aftertreatment faults.
- Review regeneration history.
- Use the current wiTECH or service-information procedure for the incomplete monitor.
Forced regeneration warning
A commanded regeneration produces extremely high exhaust temperatures. It is not a customer driveway procedure and should not be attempted from an internet checklist. Use proper service equipment, training, and an approved safe location.
STILL NOT READY?
Bring the year, make, model, engine, fuel type, and a list of the incomplete monitors. The Smog Dawg can help you understand what the vehicle is reporting and what should happen next.