Posts Tagged: readiness monitor
How OBD IM Monitors Actually Test Your Emissions System
How OBDII IM Readiness Really Works Quick Summary OBDII IM (Inspection and Maintenance) monitors are diagnostic systems in modern vehicles that continuously check whether emissions-related components are functioning properly. They run automated tests on systems such as the catalytic converter, oxygen sensors, evaporative emissions system, and EGR valve by measuring sensor data during normal driving conditions. When a monitor completes its diagnostic test successfully, it sets a “ready” status; if it detects a malfunction, it triggers a check engine light and stores a diagnostic trouble code. Vehicles typically need most … Read More
Readiness Monitors and Drive Cycles
What are readiness monitors and drive cycles? If you want to get your vehicle inspected, your car’s readiness monitors must be in the “ready” state in order to pass the test. And that means you must complete a drive cycle. In the old days of OBDI, you could reset the computer and run your vehicle over to the emissions testing station. Not anymore. Everytime you clear the codes from the computer, you’re resetting the computer and it must start all its testing from scratch. Each drive cycle routine has its … Read More