| Code | Circuit or System | Probable Cause |
|---|---|---|
| 0505 | No self diagnostic codes present | |
| 0101 | Camshaft position sensor | Check the camshaft sensor or the circuit. |
| 0102 | Mass airflow sensor/circuit | Mass airflow sensor source or ground circuit(s) may be shorted or open. Check the mass airflow sensor or circuit. |
| 0103 | Coolant temperature sensor | The coolant sensor or circuit may be shorted or open. Check the coolant temperature sensor & circuit. |
| 0104 | Vehicle speed sensor | Vehicle speed sensor signal circuit is open. |
| 0111 | EVAP purge flow monitoring system |
Have the vehicle diagnosed by a dealer service department. |
| 0114 | Fuel system rich | Check the injector, fuel pressure, fuel pressure regulator, oxygen sensor &/or the MAF sensor. |
| 0115 | Fuel system lean | Check the injector, fuel pressure, fuel pressure regulator, oxygen sensor &/or the MAF sensor. |
| 0201 | Ignition signal | Ignition signal in the primary circuit is not entered during engine cranking or running (see a dealer service department or other qualified repair shop). |
| 0203 | Closed throttle switch | Check throttle position sensor. |
| 0205 | IACV/AAC valve | Check the IACV/AAC valve & circuit. |
| 0208 | Overheating | Cooling fan or system is not operating correctly. |
| 0213 | EVAP system | Check for small leak in system. |
| 0214 | Purge volume control valve | Have the vehicle diagnosed be a dealer service department or other qualified repair shop. |
| 0301 | ECM control unit | The ECM input signal is beyond “normal” range (see a dealer service department or other qualified repair shop). |
| 0302 | EGR function | EGR control valve does not operate. |
| 0303 | Front heated oxygen sensor malfunction |
Check the component & its circuit. |
| 0304 | Knock sensor | The knock sensor is open or shorted. |
| 0305 | Exhaust gas temperature sensor | Exhaust gas temperature sensor circuit is open or shorted. |
| 0306 | EGRC BPT valve | Check the EGRC BPT valve. |
| 0307 | Closed loop operation | ECM does not enter closed loop operation. Check front oxygen sensor &/or heater. |
| 0309 | Vent control valve | Check EVAP canister vent control valve. |
| 0311 | Vacuum cut valve bypass valve | Have the vehicle diagnosed be a dealer service department. |
| 0312 | EVAP system purge control valve | Have the vehicle diagnosed be a dealer service department or other qualified repair shop. |
| 0401 | Intake air temperature sensor | IAT circuit is open or shorted. |
| 0402 | Fuel temperature sensor or circuit | Check the component & its circuit. |
| 0403 | Throttle position sensor | The TPS circuit is open or shorted. |
| 0409 | Front oxygen sensor | Check the component & its circuit. |
| 0410 | Front oxygen sensor | Check the component & its circuit. |
| 0411 | Front oxygen sensor | Check the component & its circuit. |
| 0412 | Front oxygen sensor | Check the component & its circuit. |
| 0503 | Front oxygen sensor | Defective oxygen sensor, shorted oxygen sensor circuit, defective injectors or incorrect fuel pressure. |
| 0510 | Rear oxygen sensor | Check the rear oxygen sensor & circuit. |
| 0511 | Rear oxygen sensor | Check the rear oxygen sensor & circuit. |
| 0512 | Rear oxygen sensor | Check the rear oxygen sensor & circuit. |
| 0514 | EGR system | Have vehicle diagnosed by a dealer service department. |
| 0605 | Cylinder 4 misfire | Check number 4 spark plug, ignition wire, compression or injector. |
| 0606 | Cylinder 3 misfire | Check number 3 spark plug, ignition wire, compression or injector. |
| 0607 | Cylinder 2 misfire | Check number 2 spark plug, ignition wire, compression or injector. |
| 0608 | Cylinder 1 misfire | Check number 1 spark plug, ignition wire, compression or injector. |
| 0701 | Multiple cylinder misfire | Check the spark plugs, ignition wires, injectors & compression readings for each cylinder. |
| 0702 | Catalytic converter | Possible three way catalytic converter defective. Check for injector problems, damaged exhaust tube or intake manifold leak. |
| 0704 | EVAP system | Check the EVAP control system pressure sensor. |
| 0705 | EVAP system | Check for a small leak. |
| 0706 | Fuel injection system malfunction | Mixture is too lean or too rich. |
| 0707 | Rear oxygen sensor | Check the rear oxygen sensor & circuit. |
| 0801 | Vacuum cut valve bypass valve or circuit | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 0802 | Crankshaft sensor | Check crankshaft sensor & circuit. |
| 0803 | Absolute pressure sensor | Check component & its circuit. |
| 0804 | A/T diagnosis comm line | Possible dead battery. Harness connectors between the ECM and automatic transaxle damaged. |
| 0807 | EVAP canister purge control | Have vehicle diagnosed by dealer service department or otherqualified repair shop. |
| 0901 | Front oxygen sensor heater | Check the front oxygen sensor heater and circuit. |
| 0902 | Rear oxygen sensor heater | Check rear oxygen sensor heater and circuit. |
| 0903 | Vent control valve | Check EVAP canister vent control valve. |
| 0905 | Crankshaft position sensor | Possible damaged flywheel. Check crank sensor and/or circuit. |
| 0908 | Coolant temperature sensor | Check ECT sensor & circuit. |
| 1003 | Park/neutral switch | Check park/neutral switch circuit. |
| 1005 | EGR solenoid valve circuit | EGR valve & EVAP canister purge control solenoid valve is open or shorted |
| 1008 | EVAP system | Check EVAP canister purge control valve. |
| 1101 | Inhibitor switch | Check inhibitor switch and circuit. |
| 1102 | A/T vehicle speed sensor | Check vehicle speed sensor and circuit for the automatic transaxle. |
| 1103 | A/T first signal | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1104 | A/T second signal | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1105 | A/T third signal | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1106 | A/T fourth signal | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1107 | A/T torque converter clutch | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1108 | Shift solenoid A | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1201 | Shift solenoid B | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1203 | Overrun clutch solenoid | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1204 | TCC solenoid | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1205 | Line pressure solenoid | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1206 | TPS for A/T | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1207 | Speed signal A/T | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1208 | A/T fluid temperature sensor | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1302 | MAP/BAR switch solenoid valve or circuit | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1305 | Fuel pump control module or circuit | Have vehicle diagnosed by dealer service department or other qualified repair shop. |
| 1308 | Cooling fan | Have vehicle diagnosed by dealer service department or other qualified repair shop. |