OBD-II Readiness Monitors Explained
Readiness monitors are self-tests your vehicle runs automatically while driving. Categories: Catalyst, EVAP, O2 Sensor, EGR, Heated O2, AC, Secondary Air, A/C. California requires all monitors (with 1-2 incomplete allowance) to be 'COMPLETE' to pass smog inspection.
Common OBD-II Readiness Monitors smog issues
Monitors reset after battery disconnect or code clear, requires 50-100 miles to recomplete
How to fix
Drive 50-100 miles of mixed highway + city, full warm-up cycles
Typical repair cost
Free — just drive time
Common questions
What is OBD-II Readiness Monitors?
Readiness monitors are self-tests your vehicle runs automatically while driving. Categories: Catalyst, EVAP, O2 Sensor, EGR, Heated O2, AC, Secondary Air, A/C. California requires all monitors (with 1-2 incomplete allowance) to be 'COMPLETE' to pass smog inspection.
What causes a OBD-II Readiness Monitors smog failure?
Monitors reset after battery disconnect or code clear, requires 50-100 miles to recomplete
How is OBD-II Readiness Monitors fixed?
Drive 50-100 miles of mixed highway + city, full warm-up cycles
What does fixing cost?
Free — just drive time