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 | Acronym | Description | Measurement Units | ||||
|---|---|---|---|---|---|---|---|
| X | AAT | Ambient Air Temperature | Degrees F | ||||
| X | APP_D | Accelerator Pedal Position D | Percent | ||||
| X | APP_E | Accelerator Pedal Position E | Percent | ||||
| X | CATEMP11 | Catalyst Temperature Bank 1, Sensor 1 | Degrees F | ||||
| X | CATEMP12 | Catalyst Temperature Bank 1, Sensor 2 | Degrees F | ||||
| CLR_DST | Distance Since Codes Cleared | Mileage | |||||
| CCNT | Continuous DTC Counter | Number | |||||
| X | ECT | Engine Coolant Temperature | Degrees F | ||||
| X | EGR_PCT | Commanded EGR | Percent | ||||
| X | EGR_ERR | EGR Error | Percent | ||||
| X | EVAP_PCT | Commanded Evaporative Purge | Percent | ||||
| X | EVAP_VP | Evaporative System Vapor Pressure | Pressure | ||||
| X | EQ_RAT | Commanded Equivalence Ratio | Ratio | ||||
| X | FUELSYS | Fuel System Status | OL/CL/OL DRIVE/OL FAULT/CL FAULT (1) | ||||
| IAT | Intake Air Temperature | Degrees F | |||||
| X | LOAD | Calculated Engine Load | Percent | ||||
| X | LOAD_ABS | Absolute Load Value | Percent | ||||
| X | LONG FT1 | Current Bank 1 Fuel Trim Adjustment From Stoichiometry Which Is Considered Long Term. | Percent | ||||
| MAF | Mass Airflow Rate | Volts/Mass Flow | |||||
| MIL_DIST | Distance Traveled With MIL On | Mileage | |||||
| O2S11 | Bank 1 Upstream Oxygen Sensor (11) | Volts | |||||
| O2S12 | Bank 1 Downstream Oxygen Sensor (12) | Volts | |||||
| OBD SUP | On-Board Diagnostic System | OBD II OBD I OBD Combination of or None |
|||||
| X | RPM | Revolutions Per Minute | RPM | ||||
| X | RUNTM | Run Time | Time | ||||
| X | SHRTFT1 | Current Bank Fuel Trim Adjustment From Stoichiometry Which Is Considered Short Term | Percent | ||||
| SHRTFT11 (2) | Current Bank Fuel Trim Adjustment From Stoichiometry Which Is Considered Short Term | Percent | |||||
| SHRTFT12 (2) | Current Bank 1 Fuel Trim Adjustment From Stoichiometry Which Is Considered Short Term | Percent | |||||
| SPARKADV | Spark Advance Cylinder No. 1 | Degrees | |||||
| X | SPARK_ACT | Spark Advance Actual | Degrees | ||||
| X | TAC_PCT | Commanded Throttle Actuator | Percent | ||||
| TP | Throttle Position | Percent | |||||
| X | TP_R | Relative Throttle Position | Percent | ||||
| WARMUPS | Number Of Warm Ups Since Codes Cleared | Number | |||||
| X | VSS | Vehicle Speed Sensor | Speed | ||||
|
|||||||
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.
CL FAULT = Closed loop fuel control, but fault with one upstream HO2S.