ECU CODES>>>>
All data below is taken from the 200sx ECU.
They both run the SR20DET, so I have found it very useful, considering I haven't got a manual yet!.
Code Key: First two digits are the number of long flashes, last two digits are the number of short flashes. These codes apply to '95-'98 200SX SE-Rs.
Code Circuit or System Probable Cause
505 No self diagnostic codes present
101 Camshaft position sensor Check the camshaft sensor or the circuit.
102 Mass airflow sensor/circuit Mass airflow sensor source or ground circuit(s) may be shorted or open. Check the mass airflow sensor or circuit.
103 Coolant temperature sensor The coolant sensor or circuit may be shorted or open. Check the coolant temperature sensor & circuit.
104 Vehicle speed sensor Vehicle speed sensor signal circuit is open.
111 EVAP purge flow monitoring system Have the vehicle diagnosed by a dealer service department.
114 Fuel system rich Check the injector, fuel pressure, fuel pressure regulator, oxygen sensor &/or the MAF sensor.
115 Fuel system lean Check the injector, fuel pressure, fuel pressure regulator, oxygen sensor &/or the MAF sensor.
201 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).
203 Closed throttle switch Check throttle position sensor.
205 IACV/AAC valve Check the IACV/AAC valve & circuit.
208 Overheating Cooling fan or system is not operating correctly.
213 EVAP system Check for small leak in system.
214 Purge volume control valve Have the vehicle diagnosed be a dealer service department or other qualified repair shop.
301 ECM control unit The ECM input signal is beyond “normal” range (see a dealer service department or other qualified repair shop).
302 EGR function EGR control valve does not operate.
303 Front heated oxygen sensor malfunction Check the component & its circuit.
304 Knock sensor The knock sensor is open or shorted.
305 Exhaust gas temperature sensor Exhaust gas temperature sensor circuit is open or shorted.
306 EGRC BPT valve Check the EGRC BPT valve.
307 Closed loop operation ECM does not enter closed loop operation. Check front oxygen sensor &/or heater.
309 Vent control valve Check EVAP canister vent control valve.
311 Vacuum cut valve bypass valve Have the vehicle diagnosed be a dealer service department.
312 EVAP system purge control valve Have the vehicle diagnosed be a dealer service department or other qualified repair shop.
401 Intake air temperature sensor IAT circuit is open or shorted.
402 Fuel temperature sensor or circuit Check the component & its circuit.
403 Throttle position sensor The TPS circuit is open or shorted.
409 Front oxygen sensor Check the component & its circuit.
410 Front oxygen sensor Check the component & its circuit.
411 Front oxygen sensor Check the component & its circuit.
412 Front oxygen sensor Check the component & its circuit.
503 Front oxygen sensor Defective oxygen sensor, shorted oxygen sensor circuit, defective injectors or incorrect fuel pressure.
510 Rear oxygen sensor Check the rear oxygen sensor & circuit.
511 Rear oxygen sensor Check the rear oxygen sensor & circuit.
512 Rear oxygen sensor Check the rear oxygen sensor & circuit.
514 EGR system Have vehicle diagnosed by a dealer service department.
605 Cylinder 4 misfire Check number 4 spark plug, ignition wire, compression or injector.
606 Cylinder 3 misfire Check number 3 spark plug, ignition wire, compression or injector.
607 Cylinder 2 misfire Check number 2 spark plug, ignition wire, compression or injector.
608 Cylinder 1 misfire Check number 1 spark plug, ignition wire, compression or injector.
701 Multiple cylinder misfire Check the spark plugs, ignition wires, injectors & compression readings for each cylinder.
702 Catalytic converter Possible three way catalytic converter defective. Check for injector problems, damaged exhaust tube or intake manifold leak.
704 EVAP system Check the EVAP control system pressure sensor.
705 EVAP system Check for a small leak.
706 Fuel injection system malfunction Mixture is too lean or too rich.
707 Rear oxygen sensor Check the rear oxygen sensor & circuit.
801 Vacuum cut valve bypass valve or circuit Have vehicle diagnosed by dealer service department or other qualified repair shop.
802 Crankshaft sensor Check crankshaft sensor & circuit.
803 Absolute pressure sensor Check component & its circuit.
804 A/T diagnosis comm line Possible dead battery. Harness connectors between the ECM and automatic transaxle damaged.
807 EVAP canister purge control Have vehicle diagnosed by dealer service department or otherqualified repair shop.
901 Front oxygen sensor heater Check the front oxygen sensor heater and circuit.
902 Rear oxygen sensor heater Check rear oxygen sensor heater and circuit.
903 Vent control valve Check EVAP canister vent control valve.
905 Crankshaft position sensor Possible damaged flywheel. Check crank sensor and/or circuit.
908 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
