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ProScan Help - On-Board Emission Tests
On-Board Tests
When this tool is opened with a vehicle connected, it will automatically
update all of its information.
Information Provided
- Continuous Tests (Yes / No / Not Supported)
- Misfire
- Fuel System
- Comprehensive Component
- Non-Continuous Tests (Yes / No / Not Supported)
- Catalyst
- Heated Catalyst
- Evaporative System
- Secondary Air System
- A/C System Refrigerant
- Oxygen Sensor
- Oxygen Sensor Heater
- EGR System
- Fuel Systems 1 & 2 Status
- Open Loop - Has not yet satisfied conditions to go closed loop.
- Closed Loop - Using oxygen sensor(s) as feedback for fuel control.
- Open Loop due to driving conditions (e.g., power enrichment,
deceleration enleanment).
- Open Loop due to detected system fault.
- Closed Loop, but fault with at least one oxygen sensor. May be using
single oxygen sensor for fuel control.
- Power Take Off Status (On / Off)
- Commanded Secondary Air Status
- Upstream of first catalytic converter.
- Downstream of first catalytic converter inlet.
- Atmosphere / Off
- Vehicle OBD Requirements
- OBD II (California ARB)
- OBD (Federal EPA)
- OBD and OBD II
- OBD I
- Not OBD Compliant
- EOBD
- EOBD and OBD II
- EOBD and OBD
- EOBD, OBD, and OBD II
- JOBD
- JOBD and OBD II
- JOBD and EOBD
- JOBD, EOBD, and OBD II
- Oxygen Sensor Locations
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