Several errors in DBC files

Hello

I wrote a DBC parser which prints a lot of errors when I feed it with your files.

For example in Mazda you have the line:
BO_ 1178 2017_6: 8 XXX
where "2017_6" is an invalid signal name. All identifiers must start with an alphanumeric character.

```
acura_ilx_2016_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
acura_rdx_2018_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
acura_rdx_2020_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
Error in line 493, column 10: The signal 'ECON_ON_2' has not been declared.
Error in line 496, column 10: The signal 'CMBS_BUTTON' has not been declared.
------------------------
chrysler_cusw.dbc
Error in line 186, column 23: The message 1492 (0x5D4) has not been declared.
Error in line 187, column 26: The message 498 (0x1F2) has not been declared.
Error in line 188, column 26: The message 498 (0x1F2) has not been declared.
Error in line 190, column 24: The signal 'LKAS_STATE' has not been declared.
------------------------
chrysler_pacifica_2017_hybrid_generated.dbc
Error in line 181, column 1: Semicolon expected.
Error in line 328, column 29: The signal 'BRAKE_PRESSED_2' has not been declared.
Error in line 331, column 25: The signal 'ACCEL_PEDAL' has not been declared.
Error in line 333, column 34: The signal 'LKAS_STEERING_TORQUE' has not been declared.
Error in line 355, column 34: The signal 'ACC_SPEED_CONFIG_KPH' has not been declared.
Error in line 356, column 34: The signal 'ACC_SPEED_CONFIG_MPH' has not been declared.
Error in line 357, column 26: The signal 'CRUISE_STATE' has not been declared.
Error in line 358, column 19: The signal 'SPEED' has not been declared.
Error in line 360, column 10: The signal 'CRUISE_STATE' has not been declared.
------------------------
chrysler_ram_dt_generated.dbc
Error in line 183, column 1: Semicolon expected.
Error in line 186, column 31: The message 258 (0x102) has not been declared.
Error in line 187, column 27: The message 264 (0x108) has not been declared.
Error in line 188, column 36: The message 264 (0x108) has not been declared.
Error in line 189, column 29: The message 678 (0x2A6) has not been declared.
Error in line 190, column 29: The message 678 (0x2A6) has not been declared.
Error in line 191, column 25: The message 678 (0x2A6) has not been declared.
Error in line 244, column 25: The signal 'ACC_Engaged' has not been declared.
Error in line 246, column 28: The signal 'Auto_High_Beam' has not been declared.
Error in line 248, column 36: The signal 'Driver_Seatbelt_Status' has not been declared.
Error in line 249, column 36: The signal 'High_Beam_Lever_Status' has not been declared.
------------------------
chrysler_ram_hd_generated.dbc
Error in line 183, column 1: Semicolon expected.
Error in line 189, column 29: The message 678 (0x2A6) has not been declared.
Error in line 190, column 29: The message 678 (0x2A6) has not been declared.
Error in line 191, column 25: The message 678 (0x2A6) has not been declared.
------------------------
gm_global_a_lowspeed.dbc
Error in line 117, column 16: The signal 'BSM_Indicator_Right' has not been declared.
------------------------
gm_global_a_object.dbc
Error in line 279: Indentifier BO_ not at start of line
Error in line 682: Indentifier BO_ not at start of line
------------------------
gm_global_a_powertrain_generated.dbc
Error in line 359, column 0: Semicolon expected.
------------------------
honda_accord_2018_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
Error in line 520, column 10: The signal 'ECON_ON_2' has not been declared.
Error in line 523, column 10: The signal 'CMBS_BUTTON' has not been declared.
------------------------
honda_civic_ex_2022_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
Error in line 511, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
------------------------
honda_civic_hatchback_ex_2017_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
Error in line 502, column 10: The signal 'ECON_ON_2' has not been declared.
Error in line 505, column 10: The signal 'CMBS_BUTTON' has not been declared.
------------------------
honda_civic_touring_2016_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_clarity_hybrid_2018_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_crv_executive_2016_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_crv_ex_2017_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
Error in line 500, column 28: The signal 'RELATED_TO_GAS' has not been declared.
Error in line 501, column 23: The signal 'GAS_BRAKE' has not been declared.
Error in line 505, column 10: The signal 'ECON_ON_2' has not been declared.
Error in line 508, column 10: The signal 'CMBS_BUTTON' has not been declared.
------------------------
honda_crv_touring_2016_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_fit_ex_2018_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_fit_hybrid_2018_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_insight_ex_2019_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_odyssey_exl_2018_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_odyssey_extreme_edition_2018_china_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
honda_pilot_2023_can_generated.dbc
Error in line 153, column 13: Signal name expected.
Error in line 154, column 13: Signal name expected.
------------------------
hyundai_canfd.dbc
Error in line 661, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
Error in line 662, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
Error in line 663, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
Error in line 664, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
------------------------
hyundai_kia_generic.dbc
Error in line 1654, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
Error in line 1655, column 5: Identifier CM_ must be followed by BO_ BU_ SG_ or EV_
------------------------
mazda_2017.dbc
Error in line 273, column 10: Syntax error.
Error in line 572, column 6: Signal name expected.
Error in line 604, column 10: Syntax error.
Error in line 606, column 10: Syntax error.
Error in line 608, column 10: Syntax error.
Error in line 614, column 10: Syntax error.
Error in line 617, column 10: Syntax error.
Error in line 620, column 10: Syntax error.
Error in line 791, column 1: Semicolon expected.
------------------------
subaru_forester_2017_generated.dbc
Error in line 232, column 17: The signal 'RPM' has not been declared.
------------------------
subaru_outback_2015_generated.dbc
Error in line 232, column 17: The signal 'RPM' has not been declared.
------------------------
subaru_outback_2019_generated.dbc
Error in line 232, column 17: The signal 'RPM' has not been declared.
------------------------
tesla_can.dbc
Error in line 783, column 10: The signal 'UI_mapSpeedLimit' has not been declared.
------------------------
test.dbc
Error in line 24, column 6: Signal name expected.
Error in line 25, column 6: Signal name expected.
Error in line 27, column 9: The message 80 (0x50) has not been declared.
------------------------
toyota_new_mc_pt_generated.dbc
Error in line 491, column 25: The signal 'SLOPE_ANGLE' has not been declared.
Error in line 492, column 19: The signal 'ACCEL' has not been declared.
Error in line 570, column 1: Semicolon expected.
Error in line 625, column 28: The signal 'BRAKE_POSITION' has not been declared.
------------------------
toyota_nodsu_pt_generated.dbc
Error in line 491, column 25: The signal 'SLOPE_ANGLE' has not been declared.
Error in line 492, column 19: The signal 'ACCEL' has not been declared.
Error in line 570, column 1: Semicolon expected.
------------------------
toyota_tnga_k_pt_generated.dbc
Error in line 491, column 25: The signal 'SLOPE_ANGLE' has not been declared.
Error in line 492, column 19: The signal 'ACCEL' has not been declared.
Error in line 570, column 1: Semicolon expected.
------------------------
volvo_v40_2017_pt.dbc
Error in line 353, column 22: The message 437 (0x1B5) has not been declared.
Error in line 354, column 22: The message 437 (0x1B5) has not been declared.
Error in line 355, column 22: The message 437 (0x1B5) has not been declared.
Error in line 356, column 22: The message 437 (0x1B5) has not been declared.
------------------------
vw_golf_mk4.dbc
Error in line 1474, column 32: The signal 'Checksumme_Airbag_1' has not been declared.
Error in line 1475, column 29: The signal 'Zaehler_Airbag_1' has not been declared.
Error in line 1481, column 30: The signal 'Zaehler_Bremse_1' has not been declared.
Error in line 1518, column 33: The signal 'Zaehler_Getriebe_1' has not been declared.
Error in line 1582, column 28: The signal 'LDW_Direction' has not been declared.
Error in line 1583, column 27: The signal 'XX_DLCORTLC1' has not been declared.
Error in line 1584, column 27: The signal 'XX_DLCORTLC2' has not been declared.
Error in line 1586, column 30: The signal 'MFA_v_Signal_02' has not been declared.
------------------------
vw_mqb_2010.dbc
Error in line 1592, column 30: The signal 'ACC_Hold_Request' has not been declared.
Error in line 1593, column 31: The signal 'ACC_Boost_Request' has not been declared.
Error in line 1594, column 35: The signal 'ACC_Freewheel_Request' has not been declared.
Error in line 1595, column 30: The signal 'ACC_Hold_Release' has not been declared.
Error in line 1596, column 33: The signal 'ACC_Accel_Secondary' has not been declared.
Error in line 1597, column 27: The signal 'ACC_Accel_TSK' has not been declared.
Error in line 1608, column 25: The signal 'LDW_Unknown' has not been declared.
Error in line 1609, column 27: The signal 'Alert_Message' has not been declared.
Error in line 1610, column 27: The signal 'LDW_Direction' has not been declared.
Error in line 1611, column 31: The signal 'Right_Lane_Status' has not been declared.
Error in line 1612, column 30: The signal 'Left_Lane_Status' has not been declared.
Error in line 1613, column 31: The signal 'Kombi_Lamp_Orange' has not been declared.
Error in line 1614, column 30: The signal 'Kombi_Lamp_Green' has not been declared.
Error in line 1615, column 24: The signal 'Folgefahrt' has not been declared.
Error in line 1616, column 24: The signal 'SetAbstand' has not been declared.
Error in line 1617, column 21: The signal 'Abstand' has not been declared.
Error in line 1618, column 22: The signal 'SetSpeed' has not been declared.

```

Reproduce the reported parser errors against the listed DBC files, starting with mazda_2017.dbc and the Acura, Chrysler, Honda, Hyundai, Toyota, and Volkswagen files named in the report. Review the affected lines and related declarations; done means the files parse without the reported syntax, undeclared-message, or undeclared-signal errors.

Written by the indexing model from the issue text.