| 1989–90 |
| 1000 | Ignition Line Low |
| 1001 | Ignition Line High |
| 1002 | Oxygen Heater Line Low |
| 1004 | Battery Voltage Low |
| 1005 | Sensor Ground Line Out Of Limits |
| 1013 | MPA Line High |
| 1014 | Fuel Pump Line Low |
| 1015 | Fuel Pump Line High |
| 1016 | Charge Air Temperature Sensor Line Low |
| 1017 | Charge Air Temperature Sensor Line High |
| 1018 | No Serial Data |
| 1020 | No Sync Pulse Seen |
| 1021 | Engine Failed To Start Due To Mechanical, Fuel Or Ignition Problem |
| 1022 | Start Line Low |
| 1027 | ECU Sees Wide Open Throttle |
| 1028 | ECU Does Not See Wide Open Throttle |
| 1031 | ECU Sees Closed Throttle |
| 1032 | ECU Does Not See Closed Throttle |
| 1037 | Throttle Position Sensor Reads Low |
| 1038 | Park/Neutral Line High |
| 1039 | Park/Neutral Line Low |
| 1040 | Latched B+ Line Low |
| 1041 | Latched B+ Line High |
| 1042 | No Latched B+ 1/2 Volt Drop |
| 1044 | Fault In Shift Light Circuit |
| 1047 | Wrong ECU |
| 1048 | Manual Vehicle Equipped w/Automatic ECU |
| 1049 | Automatic Vehicle Equipped w/Manual ECU |
| 1050 | Idle RPM Less Than 500 |
| 1051 | Idle RPM Greater Than 2000 |
| 1052 | MAP Sensor Out Of Limits |
| 1053 | Change In MAP Reading Out Of Limits |
| 1054 | Coolant Temperature Sensor Line Low |
| 1055 | Coolant Temperature Sensor Line High |
| 1056 | Inactive Coolant Temperature Sensor |
| 1057 | Knock Circuit Shorted |
| 1058 | Knock Value Out Of Limits |
| 1059 | A/C Request Line Low |
| 1060 | A/C Request Line High |
| 1061 | A/C Select Line Low |
| 1062 | A/C Select Line High |
| 1063 | A/C Clutch Line Low |
| 1064 | A/C Clutch Line High |
| 1065 | Oxygen Sensor Reads Rich |
| 1066 | Oxygen Sensor Reads Lean |
| 1067 | Latch Relay Line Low |
| 1068 | Latch Relay Line High |
| 1069 | No Tach |
| 1072 | IAS Motor Cannot Control Idle |
| 1073 | ECU Does Not See Speed Sensor |
| 1200 | Defective ECU Or Shorted To Voltage |
| 1201 | Injector Short To B+ |
| 1202 | All Injectors Shorted To Ground |
| 1203 | Injector No. 1 Shorted To Ground |
| 1204 | Injector No. 2 Shorted To Ground |
| 1205 | Injector No. 3 Shorted To Ground |
| 1206 | Injector No. 4 Shorted To Ground |
| 1207 | Injector No. 5 Shorted To Ground |
| 1208 | Injector No. 6 Shorted To Ground |
| 1209 | All Injectors Open |
| 1210 | Injector No. 1 Circuit Open |
| 1211 | Injector No. 2 Circuit Open |
| 1212 | Injector No. 3 Circuit Open |
| 1213 | Injector No. 4 Circuit Open |
| 1214 | Injector No. 5 Circuit Open |
| 1215 | Injector No. 6 Circuit Open |
| 1216 | No Voltage At ECU From A/C Relay |
| 1217 | No Voltage At ECU From Oxygen Heater Relay |
| 1218 | No Voltage At ECU From Power Latch Relay |
| 1219 | No Voltage At ECU From Shift Light |
| 1220 | No Voltage At ECU From EGR Solenoid |
| 1222 | MPA Not Grounded |
| 1223 | Open Injector Feed Circuits |
| 1991–95 |
| 11 | Ignition Reference Signal |
| 12 | Battery Disconnected |
| 13 | MAP Signal Fault |
| 14 | MAP Voltage Fault |
| 15 | No Vehicle Speed Signal |
| 17 | Engine Is Cold Too Long |
| 21 | Oxygen Signal Circuit |
| 22 | Improper Coolant Sensor Voltage |
| 23 | Improper Charge Temperature Sensor Voltage |
| 24 | Improper TP Sensor Voltage |
| 25 | Auto. Idle Speed Motor Circuit |
| 27 | Injector Control Circuit |
| 31 | EVAP Purge Solenoid Circuit |
| 32 | EGR System Failure |
| 33 | A/C Clutch Relay Circuit |
| 34 | Speed Control Solenoid Circuits |
| 35 | Radiator Fan Relay |
| 37 | Torque Converter Clutch Solenoid Circuit |
| 41 | Alternator Field Switching Improperly |
| 42 | ASD Relay Circuit |
| 44 | Improper Battery Temperature Sensor Voltage |
| 45 | Alternator Field Switching Improperly |
| 46 | Charging System Voltage Too High |
| 47 | Charging System Voltage Too Low |
| 51 | Oxygen Sensor Signal Lean |
| 52 | Oxygen Sensor Signal Rich |
| 53 | Internal Controller Failure |
| 54 | No Sync Pickup Signal |
| 55 | Completion Of Fault Code Display |
| 62 | Controller Failure, EMR Miles Not Stored |
| 63 | Controller Failure, EEPROM Write Denied |
| 76 | Fuel Pump Resistor Bypass Relay Circuit |
I need help ,my Jeep Grand Cherokee 2004 model bringing a code u0101 and p0730