| Have you ever had the red ‘check engine’ | | | | 25 Idle Speed Control Valve. |
| light illuminate on your dash? You wouldn’t be | | | | 28 Cooling Fan Circuit. |
| the first one. This is a little worrying when | | | | 31 ECM. |
| you’re on the freeway and have no place to | | | | 32 EGR Function. |
| stop. Then there is the stress of imagining what the | | | | 33 Heated Oxygen Sensor. |
| mechanics bills would be like. | | | | 34 Knock Sensor. |
| Here is a simple guide to finding out what’s | | | | 35 Exhaust Gas Temperature Sensor. |
| caused the ‘check engine’ light to come on, | | | | 36 EGR Control-Back Pressure Transducer. |
| so you know what’s going on before you see | | | | 37 Knock Sensor. |
| your mechanic. You may be able to identify and fix | | | | 38 Right hand bank Closed Loop (B2). |
| the problem yourself. | | | | 41 Intake Air Temperature Sensor. |
| This is the procedure for checking the ‘check | | | | 42 Fuel Temperature Sensor. |
| engine’ light fault codes for Nissans 1990-2000 | | | | 43 Throttle Position Sensor. |
| that have the Nissan OBD (consult) system installed. | | | | 44 ECCS Normal Operation. |
| For a complete list of compatible cables go to | | | | 45 Injector Leak. |
| Step 1: | | | | 47 Crankshaft Position Sensor. |
| Locate the ECU. In most models it’s underneath | | | | 51 Injector Circuit. |
| the kickboard in front of the front passenger seat. | | | | 53 Oxygen Sensor. |
| There is a knob or switch on the side marked | | | | 54 A/T Control. |
| diagnostics that has an LED next to it. | | | | 55 No Malfunction. |
| Turn this knob clockwise (or to the ‘on’ | | | | 63 No. 6 Cylinder Misfire. |
| position). | | | | 64 No. 5 Cylinder Misfire. |
| Step 2: | | | | 65 No. 4 Cylinder Misfire. |
| Note the amount of flashes shown by the LED. | | | | 66 No. 3 Cylinder Misfire. |
| This is the ‘check engine’ light fault code. | | | | 67 No. 2 Cylinder Misfire. |
| There may be several codes, but they are easily | | | | 68 No. 1 Cylinder Misfire. |
| interpreted. There will be a sequence of flashes, the | | | | 71 Random Misfire. |
| long flashes (0.6sec each) represent the 10’s | | | | 72 TWC Function right hand bank. |
| column, and the short flashes (0.3sec each) represent | | | | 73 TWC Function right hand bank. |
| the 1’s. For example if you got 2 long flashes | | | | 76 Fuel Injection System Function right hand bank. |
| followed by one short flash then you would have a | | | | 77 Rear Heated Oxygen Sensor Circuit. |
| code of 21 (ignition fault). If you have more than | | | | 82 Crankshaft Position Sensor. |
| one fault then the next fault code in sequence will | | | | 84 A/T Diagnosis Communication Line. |
| show. | | | | 85 VTC Solenoid Valve Circuit. |
| Step 3: | | | | 86 Fuel Injection System Function right hand bank. |
| Turn the diagnostics knob anticlockwise or | | | | 87 Canister Control Solenoid Valve Circuit. |
| ‘off’ and note the fault code table below. | | | | 91 Front Heated Oxygen Sensor Heater Circuit right |
| Nissan check engine light fault codes | | | | hand bank. |
| 11 Crank Angle Sensor/Camshaft Position Sensor. | | | | 94 TCC Solenoid Valve. |
| 12 Air Flow Meter/Mass Air Flow Sensor. | | | | 95 Crankshaft Position Sensor. |
| 13 Engine Coolant Temperature Sensor. | | | | 98 Engine Coolant Temperature Sensor. |
| 14 Vehicle Speed Sensor. | | | | 101 Front Heated Oxygen Sensor Heater Circuit right |
| 21 Ignition Signal. | | | | hand bank. |
| 22 Fuel Pump. | | | | 103 Park/Neutral Position Switch Circuit. |
| 23 Idle Switch. | | | | 105 EGR and EGR Canister Control Solenoid Valve |
| 24 Throttle Valve Switch. | | | | Circuit. |