| Engine Code | Engine Code Description |
|---|
| P1192 | Inlet Air Temp. Circuit Low |
| P1193 | Inlet Air Temp. Circuit High |
| P1195 | 1/1 O2 Sensor Slow During Catalyst Monitor |
| P1196 | 2/1 O2 Sensor Slow During Catalyst Monitor |
| P1197 | 1/2 O2 Sensor Slow During Catalyst Monitor |
| P1198 | Radiator Temperature Sensor Volts Too High |
| P1199 | Radiator Temperature Sensor Volts Too Low |
| P1281 | Engine Is Cold Too Long |
| P1282 | Fuel Pump Relay Control Circuit |
| P1283 | Idle Select Signal Invalid |
| P1284 | Fuel Injection Pump Battery Voltage Out Of Range |
| P1285 | Fuel Injection Pump Controller Always On |
| P1286 | Accelerator Pedal Position Sensor Supply Voltage Too High |
| P1287 | Fuel Injection Pump Controller Supply Voltage Low |
| P1288 | Intake Manifold Short Runner Solenoid Circuit |
| P1289 | Manifold Tune Valve Solenoid Circuit |
| P1290 | CNG Fuel Pressure Too High |
| P1291 | No Temp Rise Seen From Fuel Heaters |
| P1292 | CNG Pressure Sensor Voltage Too High |
| P1293 | CNG Pressure Sensor Voltage Too Low |
| P1294 | Target Idle Not Reached |
| P1295 | No 5 Volts To TP Sensor |
| P1296 | No 5 Volts To MAP Sensor |
