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Generic OBD II PID List

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GENERIC OBD II PID LIST

Freeze Frame Acronym Description Measurement Units
  AIR Secondary Air Status ON/OFF
  CCNT Continuous DTC Counter Unitless
(1) ECT Engine Coolant Temperature DEGREES
(1) FUEL SYS1 Fuel System Feedback Control Status-Bank 1 OL/CL/OL DRIVE (2) / OL FAULT/ CL FAULT
(1) FUEL SYS2 Fuel System Feedback Control Status-Bank 2 OL/CL/OL DRIVE (2) /OL FAULT/ CL FAULT
  IAT Intake Air Temp DEGREES
(1) LOAD (3) Calculated Engine Load Percent
(1) LONG FT1 Current BANK 1 fuel trim adjustment (kamref1) from stoichiometry which is considered LONG TERM. Percent
(1) LONG FT2 Current BANK 2 fuel trim adjustment (kamref2) from stoichiometry which is considered LONG TERM. Percent
  MAF Mass Air Flow Rate GM/SEC-LB/ MIN
  O2S11
O2S12		 Bank 1 Upstream Oxygen Sensor (11)
Bank 1 Downstream Oxygen Sensor (12)		 VOLTS
VOLTS
  O2S21 Bank 2 Upstream Oxygen Sensor (21) VOLTS
  O2S22 Bank 2 Downstream Oxygen Sensor (22) VOLTS
  OBD SUP On-Board Diagnostic System Cal. OBD II 50 States OBD II OBD I and OBD II OBD I None
  PTO Power Take-Off Status ON/OFF
(1)
(1)		 RPM
SHRT FT1		 Revolutions Per Minute
Current BANK fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM.		 RPM
Percent
  SHRT FT11(4) Current BANK fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM. Percent
  SHRT FT12(5) Current BANK 1 fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM. Percent
(1) SHRT FT2 Current BANK 2 fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM. Percent
(1) SHRT FT21(6) Current BANK 2 fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM. Percent
(1) SHRT FT22(7) Current BANK 2 fuel trim adjustment (lambse1) from stoichiometry which is considered SHORT TERM. Percent
  SPARKADV Spark Advance Cylinder No. 1 DEGREES
  TP Throttle Position Percent
(1) VSS Vehicle Speed Sensor MPH-KM/H
(1) in the "Freeze Frame" column denotes both a mode 1 and mode 2 PID (real time and freeze frame).
(2) OL = Open loop, have not satisfied conditions for closed loop.
(3) Percent engine load adjusted for atmospheric pressure.
(4) Individual oxygen sensor fuel trim adjustment is not supported.
(5) Individual oxygen sensor fuel trim adjustment is not supported.
(6) Individual oxygen sensor fuel trim adjustment is not supported.
(7) Individual oxygen sensor fuel trim adjustment is not supported.

CL = Closed loop using O2S(s) as feedback for fuel control.
OL DRIVE = Open loop due to driving conditions (heavy accel).
OL FAULT = Open loop due to fault with all upstream O2S sensors.
CL FAULT = Closed loop fuel control, but fault with one upstream O2S sensor on dual bank vehicles.
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