| Engine Code | Engine Code Description |
|---|
| 11 | Ignition pulse system/crank angle sensor(87 & later) |
| 12 | Ignition pulse system (1983 only)/Starter switch (84 & later) |
| 13 | Crank angle sensor or circuit |
| 14 | Vacuum switches stay on or off (1983 only)/Duty solenoid or circuit(1983 to 1985)/Injectors 1 & 2 (87-up) |
| 15 | Solenoid valve stays on or off (1983 only)/Coasting Fuel Cut (CFC) system (1983 to 1985 ) |
| 16 | Feedback system (1983 to 1985 models) |
| 17 | Fuel pump and automatic choke (1983 to 1985 carbureted) |
| 21 | Ignition pulse system (1983 only)/coolant temperature sensor or circuit (1983 to 1985 carbureted) |
| 22 | Ignition pulse system (1983 only)/Vehicle speed sensor or circuit or VLC solenoid valve or circuit. (1984 to 1988 carbureted) |
| 23 | Oxygen sensor or circuit (1983 to 1988)/pressure sensor or circuit (1983 to 1985) |
| 24 | Vacuum switches stay on or off (1983 only)/coolant temperature sensor or circuit, or Idle-up solenoid or circuit (1984 to 1988 carbureted) |
| 25 | Manifold vacuum sensor or circuit/coolant temperature sensor or circuit on 1984 models)/float chamber vent solenoid valve or circuit (1983 to 1985) |
| 32 | Coolant temperature sensor or circuit (1983)/Oxygen sensor or circuit (1984 to 1988) |
| 33 | Main system in feedback (1983 to 1988)/Vehicle speed sensor or circuit (1983 to 1985) |
| 34 | Choke power stays on or off (1983)/EGR system solenoid or circuit (1883 to 1988) |
| 35 | Canister purge solenoid or circuit (1983 to 1985) |
| 41 | Vacuum switches stay on or off (1983 only)/Feedback system (California models 1983 to 1985) |
| 42 | Vacuum switches stay on or off (1983 only)/clutch switch or circuit (1983 to 1988) |
| 43 | Choke power stays on or off (1983) |
| 46 | Radiator fan control (1983 to 1985) |
| 52 | Solenoid valve control system or clutch switch |
| 53 | Fuel pump circuit or Altitude compensator switch |
| 54 | Choke control system |
| 55 | Upshift control or EGR sensor |
