Parameter Identification (PID)

Parameter Identification (PID)

Description

The parameter identification (PID) mode allows access to powertrain control module (PCM) information. This includes analog and digital signal inputs and outputs along with calculated values and the system status. There are two types of PID lists available and both are used throughout these tests. The first is the generic (J1979) on board diagnostic (OBD) PID list. This is a standard set of PIDs that all scan tools must be able to access. The second is a Ford specific (J2190) PID list which can be accessed by an appropriate scan tool. When accessing any of these PIDs, they are continuously updated. The Generic or Ford PID list provides definitions and values in appropriate units. For more information, refer to the Society of Automotive Engineers (SAE) document J2205.


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).





a OL = Open loop, has not satisfied conditions for closed loop.
b Percent engine load adjusted for atmospheric pressure.

c Individual oxygen sensor fuel trim adjustment is not supported.

- 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 1 upstream HO2S sensor.


Ford PCM PID List










Ford TCM PID List