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.
Freeze Frame Data Mode: Description
FREEZE FRAME DATA MODE allows access to emission-related values from specific generic Parameter Identifications (PIDs). These PID values are stored when an emission-related DTC is stored in continuous memory and provide a snapshot of the conditions that were present when DTC was stored. See FREEZE FRAME DATA table.
Freeze frame data will remain in memory even if another emission-related DTC is stored, with exception to misfire or fuel system DTCs. When freeze frame data for a misfire or fuel system DTC is stored, it will overwrite any previous data and freeze frame data will not be overwritten. When freeze frame DTCs are erased or a PCM memory reset is performed, new freeze frame data will be stored. If multiple emission-related DTCs are stored in memory, always note freeze frame data DTC.
| Acronym | Description | Measurement Units | ||
|---|---|---|---|---|
| ECT | Engine Coolant | °F | ||
| FUELSYS1 | Open/Closed Loop1 | (1) OL; CL; OL Drive; OL Fault; CL Fault | ||
| FUELSYS2 | Open/Closed Loop2 | (1) OL/CL/OL Drive, OL Fault, CL Fault | ||
| LONGFT1 | Long Term Fuel Bank No. 1 | Percent | ||
| LONGFT2 | Long Term Fuel Bank No. 2 | Percent | ||
| LOAD | Calculated Load Value | Percent | ||
| RPM | Engine RPM | Rev/Min | ||
| SHRTFT1 | Short Term Fuel Bank No. 1 | Percent | ||
| SHRTFT2 | Short Term Fuel Bank No. 2 | Percent | ||
| VSS | Vehicle Speed | MPH/KMH | ||
|
||||
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.