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Diagnostic Code Index

DIAGNOSTIC CODE INDEX

DTC Description
DTC B1000  Electronic Control Unit (ECU) Performance
DTC B1001  Option Configuration Error
DTC B1004  Electronic Control Unit Identification Circuit
DTC B1009  EEPROM Checksum Mismatch
DTC B1372, B1373, or B1374 
  • DTC B1372 Device Ignition 1 (ON and START) Circuit Low
  • DTC B1373 Device Ignition 1 (ON and START) Circuit High
  • DTC B1374 Device Ignition 1 (ON and START) Circuit Open
DTC B1382, B1383, or B1384 
  • DTC B1382 Device Ignition ACCESSORY Circuit Low
  • DTC B1383 Device Ignition ACCESSORY Circuit High
  • DTC B1384 Device Ignition ACCESSORY Circuit Open
DTC B1441, B1442, or B1443 
  • DTC B1441 Device Ignition OFF, RUN, and CRANK Circuit
  • DTC B1442 Device Ignition OFF, RUN, and CRANK Circuit Low
  • DTC B1443 Device Ignition OFF, RUN, and CRANK Circuit High
DTC C0550  Electronic Control Unit (ECU) Performance
DTC U1000 and U1255 
  • DTC U1000 Class 2 Data Link Malfunction
  • DTC U1255 Lost Communications
DTC U1001-U1254  Control Module U1XXX
DTC U1300, U1301, or U1305 
  • DTC U1300 Class 2 Data Link Low
  • DTC U1301 Class 2 Data Link High
  • DTC U1305 Class 2 Data Link Low or High
DTC U2100  Controller Area Network (CAN) Bus Communication
DTC U2105-U2199 
  • DTC U2105 Lost Communications With Engine Control System
  • DTC U2199 Unassigned