Mode 1
Data Output with a Scan Tool
The output of data relevant to OBD from the control modules was stipulated by law for the USA. It is described in SAE J 1979.
Data output is subdivided into different modes.
Mode 1
Output of:
- Input signals
- Output signals
- System status information
- Values calculated by the control module
Mode 1
The following PIDs are supported in Mode 1:
$00 Supported PIDs
The PIDs supported in this mode are displayed in a 4-byte word (Data A, B, C and D).
Data A
PID 01 to 08
Data B
PID 09 to 10
Data C
PID 11 to 18
Data D
PID 19 to 20
$01 Status of diagnostic system
The system status is displayed in a 4-byte word (Data A, B, C and D).
Data
A: 1000 0001
B: 0000 0111
C: 0110 110
D: 0110 1101
Data A
Data B
Data C
Data D
NOTE: After the fault memory has been erased, the bits of the installed sub-systems where a fault was present are set to 1.
The bits are reset to 0:
- after 1 driving cycle if the check was fault-free
- after 2 driving cycles if a fault was detected.
$03 Status of injection system
Data
A:G0000 0010
B: 0000 0010
Data A - Status of bank 1
Data B - Status of bank 2
NOTE: Only one bit at a time can be set to 1 to indicate the status.
$04 Calculated load value
Output of calculated load as a percentage of the maximum load.
Display between 0% and 100%.
$05 Engine coolant temperature
Output of the momentary engine coolant temperature.
Display between - 40 °C and 215 °C.
$06 HO2S integrator, bank 1
Output of the control value FR of the oxygen sensor closed-loop control, bank 1.
Display: lean to - 100%
rich to 99.22%
$07 HO2S adaptation, bank 1
Output of the adaptation value FRA of the oxygen sensor closed-loop control, bank 1.
Display: lean to - 100%
rich to 99.22%
$08 HO2S integrator, bank 2
Output of the control value FR of the oxygen sensor closed-loop control, bank 2.
Display: lean to - 100%
rich to 99.22%
$09 HO2S adaptation, bank 2
Output of the adaptation value FRA of the oxygen sensor closed-loop control, bank 2.
Display: lean to - 100%
rich to 99.22%
$0C Engine speed
Output of the momentary engine speed.
Display of engine speed in rpm.
$0D Vehicle speed
Output of the speed currently travelled.
Display of speed in km/h up to a maximum of 255 km/h
$0E Ignition timing, cylinder 1
Output of the ignition angle from cylinder 1.
Display: after TDC up to - 64 ° crk
before TDC up to 63.5 ° crk
°crk - degrees crank angle
$0F Intake air temperature
Output of intake air temperature.
Display between - 40 °C and 215 °C.
$10 Air mass
Output of the intake air mass.
Display between 0 and 655.35 g/s
g/s - Grams per second
$11 Throttle valve position
Output of the absolute throttle angle.
Display between 0% and 100%
$12 Status of secondary air system
Data A
NOTE: Only one bit at a time can be set to 1 to indicate the status.
$13 Number of oxygen sensors
Output of the number and location of oxygen sensors.
$14 Oxygen sensor signal, bank 1, sensor 1
Display of oxygen sensor voltage and associated oxygen sensor.
Display of sensor voltage between 0 V and 1.275 V and of the oxygen sensor in percent.
Display: lean to - 100%
rich to 99.22%
$15 Oxygen sensor signal, bank 1, sensor 2
Display of oxygen sensor voltage and associated oxygen sensor.
Display of sensor voltage between 0 V and 1.275 V and of the oxygen sensor in percent.
Display: 99.22 %
NOTE: Since the sensor behind the catalytic converter is not included in the closed-loop control, 99.22% is displayed.
$18 Oxygen sensor signal, bank 2, sensor 1
Display of oxygen sensor voltage and associated oxygen sensor.
Display of sensor voltage between 0 V and 1.275 V and of the oxygen sensor in percent.
Display: lean to - 100%
rich to 99.22%
$19 Oxygen sensor signal, bank 2,
sensor 2 Display of oxygen sensor voltage and associated oxygen sensor.
Display of sensor voltage between 0 V and 1.275 V and of the oxygen sensor in percent.
Display: 99.22 %
NOTE: Since the sensor behind the catalytic converter is not included in the closed-loop control, 99.22% is displayed.
$1C OBD requirements
Display of system classification.
01 - OBD II for California
02 - OBD for EPA
03 - OBD II for California and EPA
04 - OBD I
05 - Does not comply with any OBD requirements
06 - EOBD (European OBD)