Normal Scan Data Values

FREEZE FRAME

OBD II provides a special diagnostic screen known as Freeze Frame, to help technicians determine the exact conditions that caused a MIL to be illuminated. Freeze Frame traps the following data the moment a monitor fails:

- DTC
- Fuel System Status (Open/Closed Loop)
- Engine Load
- Coolant Temperature
- Short Term Fuel Trim (Bank 1*)
- Long Term Fuel Trim (Bank l*)
- Short Term Fuel Trim (Bank 2**)
- Long Term Fuel Trim (Bank 2**)
- RPM
- Vehicle Speed
- Intake Air Temperature
- Throttle Position

* Also known as Bank "A" or Left Bank.
** Also known as Bank "B" or Right Bank.

Accessing this data can help you determine the nature of the concern and the steps required to solve the problem.