Monitored Emission Control Systems
The OBD-II System monitors all emission control systems that are on-board. Not all vehicles have a full complement of emission control systems. For example, a vehicle may not be equipped with secondary Air Injection (AIR) or Exhaust Gas Recirculation (EGR). The OBD-II regulations require monitoring of the following:
- Comprehensive component monitoring. Emission related inputs and outputs.
- Exhaust Gas Recirculation (EGR) system.
- Misfire monitoring.