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OBD-II GENERIC OPERATIONAL DATA ITEMS (CONT.)
Intake Air Temperature Range: -40 C to 215 C
Temperature of the air drawn through a cleaner and distributed to each
cylinder for use in combustion.
Intake Manifold Pressure Range: 10 to 105 kPa, or 0 to 5 Volts
The manifold absolute pressure displayed in kilopascals or volts. A low
reading will indicate that the pressure is low (vacuum is high) and a high
reading will indicate that the pressure is high (vacuum is low).
Long Term Fuel Trim (Bank 1 / Bank 2)
Long Term adjustments to the Bank 1 fuel calibration schedule which
compensate for vehicle differences and gradual changes that occur over
time. Range: -100.00% to 99.92% (-100% indicating a maximum lean
condition, 99.92% indicating a maximum rich condition, and 0% indicating
no adjustment).
OBD-II Require
Requirement level for the On Board Diagnostics designed for the vehicle.
OBD-II (CARB) - Vehicle designed with OBD requirements for California
Air Resource Board OBD-II.
OBD (Fed EPA) - Vehicle designed with OBD requirements for Federal
EPA OBD.
OBD and OBD-II - Vehicle designed with OBD requirements for OBD and
OBD-II.
OBD-I - Vehicle designed with OBD requirements for OBD-I.
Not Intended - Vehicle not intended to meet any OBD requirements.
Oxygen Sensor
The detection of Oxygen (O2) content in the exhaust gases. The sensor
readings are used by the ECM to help calculate the air-fuel mixture to
maintain proper vehicle performance.
Short Term Fuel Trim (Bank 1/2)
Dynamic or instantaneous adjustments to the Bank 1 base fuel schedule.
Range: -100.00% to 99.92% (-100% indicating a maximum lean
condition, 99.92% indicating a maximum rich condition, and 0% indicating
no adjustment).
Vehicle Speed (MPH) - Sensor reading displayed in miles per hour.