Freeze Frame Data

Description

Freeze Frame Data allows access to emission related values from specific generic PIDs. These values are stored the instant an emission related DTC is stored in Continuous Memory. This provides a snapshot of the conditions that were present when the DTC was stored. Once one set of freeze frame data is stored, this data will remain in memory even if another emission related DTC is stored. When a DTC associated with the freeze frame is erased or a PCM memory reset is performed, new freeze frame data can be stored again. In the event of multiple emission related DTCs in memory, always note the DTC for the freeze frame data.

Accessing Freeze Frame PID Data

Refer to the manufacturer manual for scan tool instructions.

Resetting Vehicle Specific DTCs

Refer to the manufacturer manual for scan tool instructions.

OBD PID Data Monitor

The PID monitor for OBD offers real time evaluation of several emissions-related parameters. Most of these are related to the HO2S for which the diesel has no equivalent.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Freeze Frame Data

Use the Manual With the Right Hardware

When to See a Mechanic

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