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.
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HOMESERVICE MANUALSFORD1999MUSTANG GT, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1901 (ENGINE CONTROLS - DIAGNOSTIC METHODS (EXCEPT DIESEL & HYBRID))PARAMETER IDENTIFICATION (PID)DESCRIPTIONGENERIC OBD PID LIST
1999 Ford Mustang GT, 2D Convertible, Standard
Generic OBD PID List
1999 Ford Mustang GT, 2D Convertible, StandardSECTION Generic OBD PID List
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
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 |
| 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 DRIVEa /OL FAULT/ CL FAULT |
| X | FUEL SYS2 | Fuel System Feedback Control Status-Bank 2 | OL/CL/OL DRIVEa /OL FAULT/ CL FAULT |
| IAT | Intake Air Temperature | Degrees | |
| X | LOADb | 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 |
|
| 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 (lambse1) From Stoichiometric Which Is Considered Short Term | % |
| X | SHRTFT2 | Current Bank 2 Fuel Trim Adjustment (lambse1) 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 | Number of warm ups since codes cleared | Units | |
| X | VSS | Vehicle Speed Sensor | km/h-mph |
|
a OL = Open loop, have not satisfied conditions for closed loop.
b Percent engine load adjusted for atmospheric pressure.
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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.