Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Non-Emission Related Freeze Frame Data
Freeze frame data allows access to non-emission related values from specific manufacturers PIDs. These values are stored when a non-emission related DTC is stored in continuous memory. This provides a snapshot of the conditions that were present when the DTC was stored. Once 1 set of freeze frame data is stored, this data remains in memory even if another DTC is stored. When a DTC associated with the freeze frame data is cleared or a KAM reset is carried out, new freeze frame data will be stored again.
| Acronym | Description | Measurement Units |
|---|---|---|
| DTCFZ | Frozen DTC detailed number | Decimal |
| RPM | Engine speed | RPM |
| TFT | Transaxle fluid temperature | Degrees |
| M_SPEED | Traction motor speed | RPM |
| G_INV_V | Generator inverter voltage | Volts |
| M_PHTMP | The highest traction motor inverter temperature within the 3 phases | Degrees |
| MCLTEMP | Traction motor coil temperature | Degrees |
| G_PHTMP | The highest generator motor inverter temperature within the 3 phases | |
| GCLTEMP | Generator motor coil temperature | Degrees |
| G_SPEED | Generator motor speed | RPM |
| TQ_DSD | Desired Total torque | Nm |
| MTQ_CMD | Desired traction motor torque | Nm |
| GTQ_OUT | Desired generator motor torque | Nm |
| CONTACT | Traction battery contactor status TCM received | Open/Closed |
| ABS_STAT | ABS system status TCM received | Activated/Not Activated |
| G_SDN_A | Generator motor shutdown TCM received | On/Off |
| M_SDN_C | Generator motor shutdown TCM received | On/Off |
| M_SDN_A | Traction motor shutdown TCM received | On/Off |
| M_SDN_C | Traction motor shutdown TCM received | On/Off |
| HVINTLCK | High voltage interlock circuit status | On/Off |
| TCM_HAZ | Hazard indicator commanded | On/Off |
| TCM_CAU | Caution indicator commanded | On/Off |
| PRNDL_T | Gear selector position TCM received | Selector position |
| MECT | Motor electronics coolant temperature TCM received | Degrees |
NO RELATED
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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.