Freeze Frame Data Mode: Description

2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION Description
WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.

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 DATAΒ  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.

FREEZE FRAME DATA

Acronym Description Measurement Units
ECT Engine Coolant Β°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
(1) OL = Open Loop, Closed Loop (CL) conditions have not been satisfied. CL = Using HO2S feedback for fuel control. OL Drive = Open loop due to driving conditions (heavy acceleration). OL Fault = Open loop due to vehicle system fault. CL Fault = Closed loop fuel control, but fault with HO2S sensor(s).
RENDER: 1.0x

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

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