| 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 |
| P1297 | No Change in MAP From Start To Run |
| P1298 | Lean Operation At wide Open Throttle |
| P1299 | Vacuum Leak Found (IAC Fully Seated) |
| P1388 | Auto Shutdown (ASD) Relay Control Circuit |
| P1389 | No Auto Shutdown (ASD) Relay Output Voltage At PCM |
| P1390 | Timing Belt Skipped One Tooth or More |
| P1391 | Intermittent Loss of CMP or CKP |
| P1398 | Mis-Fire Adapter Numerator at Limit |
| P1399 | Wait To Start Lamp Circuit |
| P1403 | No 5 Volts To EGR Sensor |
| P1475 | Aux. 5 Volt Output Too High |
| P1476 | Too Little Secondary Air |
| P1477 | Too Much Secondary Air |
| P1478 | Battery Temp Sensor Volts Out of Limit |
| P1479 | Transmission Fan Relay Circuit |
| P1480 | PCV Solenoid Valve |
| P1482 | Catalyst Temperature Sensor Circuit Shorted Low |
| P1483 | Catalyst Temperature Sensor Circuit Shorted High |
| P1484 | Catalytic Converter Overheat Detected |
| P1485 | Air Injection Solenoid Circuit |
| P1486 | Evap Leak Monitor Pinched Hose |
| P1487 | Hi Speed Rad Fan CTRL Relay Circuit |
| P1488 | Auxiliary 5 Volt Supply Output Too Low |
| P1489 | High Speed Fan CTRL Relay Circuit |
| P1490 | Low Speed Fan CTRL Relay Circuit |
| P1491 | Rad Fan Control Relay Circuit |
| P1492 | Battery Temperature Sensor Voltage Too High |
| P1493 | Battery Temperature Sensor Voltage Too Low |
| P1494 | Leak Detection Pump Switch or Mechanical Fault |
| P1495 | Leak Detection Pump Solenoid Circuit |
| P1496 | 5 Volt Supply Output Too Low |
| P1498 | High speed Rad Fan Ground CTRL Rly Circuit |
| P1594 | Charging System Voltage Too High |
| P1595 | Speed Control Solenoid Circuits |
| P1596 | Speed Control Switch Always High |
| P1597 | Speed Control Switch Always Low |
| P1598 | A/C Pressure Sensor Volts Too High |
| P1599 | A/C Pressure Sensor Volts Too Low |
| P1602 | PCM Not Programmed |
| P1680 | Clutch Released Switch Circuit |
| P1681 | No I/P Cluster CCD/J1850 Messages Received |
| P1682 | Charging System Voltage Too Low |
| P1683 | Speed Control Power Relay Or Speed Control 12 Volt Driver Circuit |
| P1684 | Battery Disconnected Within Last 50 Starts |
| P1685 | Skim Invalid Key |
| P1686 | No SKIM Bus Message Received |
| P1687 | No Cluster Bus Message |
| P1688 | Internal Fuel Injection Pump Controller Failure |
| P1689 | No Communication Between ECM & Injection Pump Module |
| P1690 | Fuel injection pump CKP Sensor Does Not Agree With ECM CKP Sensor |
| P1691 | Fuel Injection Pump Controller Calibration Failure |
| P1693 | DTC Detected In ECM Or PCM |
| P1694 | No CCD Messages Received From ECM |
| P1695 | No CCD/J185O Message From BCM |
| P1696 | PCM Failure EEPROM Write Denied |
| P1697 | PCM Failure SRI Mile Not Stored |
| P1698 | No CCD Messages Received From PCM |
| P1719 | Skip Shift Solenoid Circuit |
| P1740 | TCC Or OD Solenoid Performance |
| P1756 | Governor Pressure Not Equal To Target At 15–20 PSI |
| P1757 | Governor Pressure Above 3 PSI When Request Is 0 PSI |
| P1762 | Governor Pressure Sensor Offset Improper Voltage |
| P1763 | Governor Pressure Sensor Voltage Too High |
| P1764 | Governor Pressure Sensor Voltage Too Low |
| P1765 | Trans 12 Volt Supply Relay Control Circuit |
| P1899 | Park/Neutral Position Switch Stuck In Park or In Gear |
