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# Information about OBD-II PIDs |
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# http://en.wikipedia.org/wiki/OBD-II_PIDs |
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4
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# PID hex codes |
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PIDS_SUPPORTED_00_20 = "00" |
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MONITOR_STATUS_SINCE_DTC_CLEARED = "01" |
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7
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FREEZE_DTC = "02" |
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8
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VEHICLE_IDENTIFICATION_NUMBER = "02" |
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9
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FUEL_SYSTEM_STATUS = "03" |
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10
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CALCULATED_ENGINE_LOAD = "04" |
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11
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ENGINE_COOLANT_TEMPERATURE = "05" |
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12
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SHORT_TERM_FUEL_TRIM_BANK_1 = "06" |
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LONG_TERM_FUEL_TRIM_BANK_1 = "07" |
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SHORT_TERM_FUEL_TRIM_BANK_2 = "08" |
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LONG_TERM_FUEL_TRIM_BANK_2 = "09" |
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FUEL_PRESSURE = "0A" |
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ECU_NAME = "0A" |
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INTAKE_MANIFOLD_PRESSURE = "0B" |
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19
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ENGINE_RPM = "0C" |
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20
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VEHICLE_SPEED = "0D" |
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21
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TIMING_ADVANCE = "0E" |
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22
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INTAKE_AIR_TEMPERATURE = "0F" |
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23
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MAF_AIR_FLOW = "10" |
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THROTTLE_POSITION = "11" |
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# TODO: Oxygen sensors |
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AUXILIARY_INPUT_STATUS = "1E" |
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ENGINE_RUN_TIME_SINCE_START = "1F" |
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PIDS_SUPPORTED_21_40 = "20" |
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31
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DISTANCE_TRAVELED_WITH_MIL_ON = "21" |
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32
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33
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FUEL_RAIL_PRESSURE = "23" |
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35
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COMMANDED_EGR = "2C" |
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EGR_ERROR = "2D" |
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COMMANDED_EVAPORATIVE_PURGE = "2E" |
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FUEL_LEVEL_INPUT = "2F" |
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39
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DISTANCE_TRAVELED_SINCE_CODES_CLEARED = "31" |
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40
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EVAP_SYSTEM_VAPOR_PRESSURE = "32" |
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BAROMETRIC_PRESSURE = "33" |
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PIDS_SUPPORTED_41_60 = "40" |
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CONTROL_MODULE_VOLTAGE = "41" |
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ABSOLUTE_LOAD_VALUE = "42" |
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AMBIENT_AIR_TEMPERATURE = "46" |
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TIME_RUN_WITH_MIL_ON = "4D" |
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TIME_SINCE_TROUBLE_CODES_CLEARED = "4E" |
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51
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FUEL_TYPE = "51" |
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52
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ETHANOL_FUEL_PERCENTAGE = "52" |
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54
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RELATIVE_ACCELERATOR_PEDAL_POSITION = "5A" |
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HYBRID_BATTERY_PACK_REMAINING_LIFE = "5B" |
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ENGINE_OIL_TEMPERATURE = "5C" |
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FUEL_INJECTION_TIMING = "5D" |
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ENGINE_FUEL_RATE = "5E" |
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60
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PIDS_SUPPORTED_61_80 = "60" |
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ENGINE_PERCENT_TORQUE = "64" |
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# TODO: remaining PIDs |
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# Mode 01 PID 51 returns a value for the vehicle's fuel type |
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FUEL_TYPE_DESCRIPTION = ( |
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'Not Available', |
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'Gasoline', |
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'Methanol', |
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'Ethanol', |
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'Diesel', |
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'Liquefied petroleum gas (LPG)', |
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'Compressed natural gas (CNG)', |
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'Propane', |
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'Electric', |
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'Bifuel running Gasoline', |
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'Bifuel running Methanol', |
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'Bifuel running Ethanol', |
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'Bifuel running Liquefied petroleum gas (LPG)', |
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'Bifuel running Compressed natural gas (CNG)', |
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'Bifuel running Propane', |
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'Bifuel running Electricity', |
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'Bifuel running electric and combustion engine', |
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'Hybrid gasoline', |
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'Hybrid Ethanol', |
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'Hybrid Diesel', |
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'Hybrid Electric', |
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'Hybrid running electric and combustion engine', |
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'Hybrid Regenerative', |
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'Bifuel running diesel' |
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) |
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FUEL_SYSTEM_STATUS_DESC = { |
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0: 'No fuel system available', |
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1: 'Open loop due to insufficient engine temperature', |
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2: 'Closed loop, using oxygen sensor feedback to determine fuel mix', |
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4: 'Open loop due to engine load OR fuel cut to deceleration', |
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8: 'Open loop due to system failure', |
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16: 'Closed loop, using at least one oxygen sensor but there is a fault in the feedback system' |
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} |
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# Mode 01 PID 12 returns a single byte of data which describes the |
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# secondary air status. |
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SECONDARY_AIR_STATUS = { |
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1: 'Upstream', |
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2: 'Downstream of catalytic converter', |
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4: 'From the outside atmosphere or off', |
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8: 'Pump commanded on for diagnostics', |
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} |
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# Mode 01 PID 1C returns a single byte of data which describes which OBD |
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# standards. |
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OBD_STANDARDS = ( |
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None, |
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'OBD-II as defined by the CARB', |
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'OBD as defined by the EPA', |
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'OBD and OBD-II', |
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'OBD-I', |
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120
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'Not OBD compliant', |
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'EOBD (Europe)', |
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'EOBD and OBD-II', |
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'EOBD and OBD', |
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'EOBD, OBD and OBD II', |
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125
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'JOBD (Japan)', |
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'JOBD and OBD II', |
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'JOBD and EOBD', |
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128
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'JOBD, EOBD, and OBD II', |
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129
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'Reserved', |
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'Reserved', |
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'Reserved', |
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'Engine Manufacturer Diagnostics (EMD)', |
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'Engine Manufacturer Diagnostics Enhanced (EMD+)', |
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'Heavy Duty On-Board Diagnostics (Child/Partial) (HD OBD-C)', |
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'Heavy Duty On-Board Diagnostics (HD OBD)', |
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'World Wide Harmonized OBD (WWH OBD)', |
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'Reserved', |
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'Heavy Duty Euro OBD Stage I without NOx control (HD EOBD-I)', |
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'Heavy Duty Euro OBD Stage I with NOx control (HD EOBD-I N)', |
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'Heavy Duty Euro OBD Stage II without NOx control (HD EOBD-II)', |
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'Heavy Duty Euro OBD Stage II with NOx control (HD EOBD-II N)', |
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'Reserved', |
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'Brazil OBD Phase 1 (OBDBr-1)', |
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'Brazil OBD Phase 2 (OBDBr-2)', |
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'Korean OBD (KOBD)', |
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'India OBD I (IOBD I)', |
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'India OBD II (IOBD II)', |
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'Heavy Duty Euro OBD Stage VI (HD EOBD-IV)' |
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) |
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DTCs_table = { |
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'0': 'P0', |
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'1': 'P1', |
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'2': 'P2', |
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'3': 'P3', |
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'4': 'C0', |
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'5': 'C1', |
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'6': 'C2', |
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'7': 'C3', |
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'8': 'B0', |
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'9': 'B1', |
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'A': 'B2', |
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'B': 'B3', |
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'C': 'U0', |
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'D': 'U1', |
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'E': 'U2', |
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'F': 'U3' |
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} |
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from obdlib.utils import * |
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174
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class Pids(object): |
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""" |
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Retrieves pid info from the mode file |
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gets a necessary pid only |
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""" |
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180
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def __init__(self): |
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self.mode = 0 |
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self.command_path = "obdlib/obd/commands/pids.{}" |
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184
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def set_mode(self, mode): |
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""" |
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Sets the current mode |
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:param mode: integer - current mode |
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:return self |
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""" |
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self.mode = mode |
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return self |
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def __getitem__(self, item): |
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""" |
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Gets one pid only |
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:param item: integer - the pid number |
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:return pid: tuple - params about pid |
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""" |
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pid = () |
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with open(self.command_path.format(self.mode)) as pids: |
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for index, value in enumerate(pids): |
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if index == item: |
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pid = eval(value) |
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break |
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return pid |
s-s-boika /
obdlib
