A L L Diagnostic Trouble Codes ( DTC )

• Testing and Inspection
  • Diagnostic Trouble Code Descriptions
  • Manufacturer Code Charts
    • DTC 12
    • DTC 15
    • DTC 21
    • DTC 23
    • DTC 44
    • DTC 45
    • DTC 51
  • Related Tests, Information and Procedures
    • A Charts
      • Chart A-1 Dwell Fixed Between 10 and 50 Degrees
      • Chart A-2 Dwell Fixed Over 50 Degrees
      • Chart A-3 Coolant Sensor Circuit Check
      • Chart A-4 Check Engine Light Inoperative
      • Chart A-5 TPS Enrichment Check
      • Chart A-6 Won't Flash Code 12
    • C Charts
      • Chart C-2A Stepped Speed Control (SSC) Check
      • Chart C-2B Stepped Speed Control (SSC) Check
      • Chart C-2C Stepped Speed Control (SSC) Power Steering Check
      • Chart C-2D Stepped Speed Control (SSC) Check
      • Chart C-4D Ignition System Check
      • Chart C-6A Air Management Check W/ Electronic Solenoids
      • Chart C-7C EGR Valve Check Non-ECM Controlled
      • Chart C-9D Electric EFE Non-ECM Controlled