Generic OBD PID List
An X in the Freeze Frame column denotes both a mode 1 and mode 2 PID (real time and freeze frame).
FREEZE FRAME DATA REFERENCE
| Freeze Frame | Acronym | Description | Measurement Units | ||||
|---|---|---|---|---|---|---|---|
| X | AAT | Ambient Air Temperature | Degrees | ||||
| X | AIR | Secondary Air Status | On/Off | ||||
| X | APP_D | Accelerator Pedal Position D | % | ||||
| X | APP_E | Accelerator Pedal Position E | % | ||||
| X | APP_F | Accelerator Pedal Position F | % | ||||
| X | CATEMP11 | Catalyst Temperature Bank 1, Sensor 1 | Degrees | ||||
| X | CATEMP12 | Catalyst Temperature Bank 1, Sensor 2 | Degrees | ||||
| X | CATEMP21 | Catalyst Temperature Bank 2, Sensor 1 | Degrees | ||||
| X | CATEMP22 | Catalyst Temperature Bank 2, Sensor 2 | Degrees | ||||
| CLR_DST | Distance since codes cleared | Km | |||||
| CCNT | Continuous DTC Counter | Unitless | |||||
| X | ECT | Engine Coolant Temperature | Degrees | ||||
| X | EGR_PCT | Commanded EGR | % | ||||
| X | EGR_ERR | EGR Error | % | ||||
| X | EVAP_PCT | Commanded Evaporative Purge | % | ||||
| X | EVAP_VP | Evaporative System Vapor Pressure | Pa | ||||
| X | EQ_RAT | Commanded Equivalence Ratio | Unit | ||||
| X | FUEL SYS1 | Fuel System Feedback Control Status-Bank 1 | OL/CL/OL DRIVE (1) /OL FAULT/ CL FAULT | ||||
| X | FUEL SYS2 | Fuel System Feedback Control Status-Bank 2 | OL/CL/OL DRIVE a /OL FAULT/ CL FAULT | ||||
| IAT | Intake Air Temperature | Degrees | |||||
| X | LOAD (2) | Calculated Engine Load | % | ||||
| X | LOAD_ABS | Absolute Load Value | % | ||||
| X | LONGFT1 | Current Bank 1 Fuel Trim Adjustment (kamref1) From Stoichiometric Which Is Considered Long Term | % | ||||
| X | LONGFT2 | Current Bank 2 Fuel Trim Adjustment (kamref2) From Stoichiometric Which Is Considered Long Term | % | ||||
| X | MAF | Mass Air Flow Rate | gm/s-lb/min | ||||
| MIL_DIST | Distance traveled with MIL on | Kilometer | |||||
| X | O2S11 | Bank 1 Upstream Oxygen Sensor (11) | Volts | ||||
| X | O2S12 | Bank 1 Downstream Oxygen Sensor (12) | Volts | ||||
| X | O2S13 | Bank 1 Downstream Oxygen Sensor (13) | Volts | ||||
| X | O2S21 | Bank 2 Upstream Oxygen Sensor (21) | Volts | ||||
| X | O2S22 | Bank 2 Downstream Oxygen Sensor (22) | Volts | ||||
| X | O2S23 | Bank 2 Downstream Oxygen Sensor (23) | Volts | ||||
| OBDSUP | On Board Diagnostic System | OBD II OBD I OBD Combination of or None |
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| X | PTO | Power Take-Off Status | On/Off | ||||
| X | RPM | Revolutions per Minute | RPM | ||||
| X | RUNTM | Run time | Seconds | ||||
| X | SHRTFT1 | Current Bank Fuel Trim Adjustment (lambse 1) From Stoichiometric Which Is Considered Short Term | % | ||||
| X | SHRTFT2 | Current Bank 2 Fuel Trim Adjustment (lambse 1) From Stoichiometric Which Is Considered Short Term | % | ||||
| X | SPARKADV | Spark Advance Requested | Degrees | ||||
| X | SPARK_ACT | Spark Advance Actual | Degrees | ||||
| X | TAC_PCT | Commanded Throttle Actuator | % | ||||
| X | TP | Throttle Position | % | ||||
| X | TP_R | Relative Throttle Position | % | ||||
| WARM_UPS VSS |
Number of warm ups since codes cleared Vehicle Speed Sensor |
Units km/h-mph |
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CL = Closed loop using HO2S(s) as feedback for fuel control. OL DRIVE = Open loop due to driving conditions (heavy acceleration). OL FAULT = Open loop due to fault with all upstream HO2S sensors. CL FAULT = Closed loop fuel control, but fault with one upstream HO2S sensor on dual bank vehicles. |
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