
50
Data Parameters Long Parameter Names
O2S VOLTAGE BANK x,
SENSOR y
Shows the status of the oxygen sensor in V or percentages. Designed
for conventional 0 - 1 V oxygen sensors. Sensors with a different full
scale will be adapted. Negative percentages or 0 V indicate a 'lean'
condition. Positive percentages or 1 V indicate a 'rich' condition.
See also PID $24 and up or $34 and up.
OBD REQUIREMENTS Shows the OBD requirements that the vehicle was designed for
POWER TAKE OFF (PTO)
STATUS
Shows Power Take Off (PTO) status.
RELATIVE FUEL
PRESSURE
Shows the fuel rail pressure at the engine relative to the manifold
vacuum.
RELATIVE THROTTLE
POSITION
Shows the 'learned' throttle position. Due to the 'closed throttle offset',
Wide Open Throttle will be much less than 100%. See PID $11, $47
and $48 for the absolute position.
SHORT TERM FUEL TRIM
BANK x
Shows the correction used by the Closed Loop fuel algorithm.
Negative values indicate a 'lean' condition, positive values a 'rich'
condition. A 0% correction is shown if the fuel system is operating in
Open Loop.
SHORT TERM FUEL TRIM
Bx-Sy
Shows the status of the oxygen sensor in V or percentages. Designed
for conventional 0 - 1 V oxygen sensors. Sensors with a different full
scale will be adapted. Negative percentages or 0 V indicate a 'lean'
condition. Positive percentages or 1 V indicate a 'rich' condition.
See also PID $24 and up or $34 and up.
TIME SINCE DTCs
CLEARED
Accumulated time since the DTCs were cleared. The maximum
number is 65535. To set to 0, reset all DTCs
TIME SINCE ENGINE
START
The incrementing counter starts when the engine runs. It freezes if the
engine stalls. It resets if the ECM powers up and when the ignition key
enters the 'key-on, engine off' position.
VEHICLE SPEED
Shows the vehicle speed as obtained from a sensor or as calculated
by the ECM (using other inputs).
Table 7-1 Long parameter names (sheet 4 of 4)
Parameter Description for long parameter
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