Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1998 Nissan-Datsun Sentra BaseFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
NOTE:
Retrieval of some diagnostic codes may require the use of special OEM tester or flash method using instrument cluster indicator. For procedures/testing of codes not shown below, refer to appropriate system article.
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P0100 | Mass Airflow (MAF) Sensor |
| P0105 | Absolute Pressure Sensor |
| P0110 | Intake Air Temp. Sensor |
| P0115 | Engine Coolant Temperature (ECT) Sensor |
| P0120 | Throttle Position (TP) Sensor |
| P0125 | Engine Coolant Temperature (ECT) Sensor |
| P0130 | Front HO2S Circuit |
| P0131 | Front HO2S Circuit |
| P0132 | Front HO2S Circuit |
| P0133 | Front HO2S Circuit |
| P0134 | Front HO2S Circuit |
| P0135 | Front HO2S Heater Circuit |
| P0137 | Rear HO2S Circuit |
| P0138 | Rear HO2S Circuit |
| P0139 | Rear HO2S Circuit |
| P0140 | Rear HO2S Circuit |
| P0141 | Rear HO2S Heater Circuit |
| P0171 | Fuel System/MAF Sensor |
| P0172 | Fuel System/MAF Sensor |
| P0180 | Tank Fuel Temperature (TFT) Sensor |
| P0300 | Random Cyl. Misfire Detected |
| P0301 | No. 1 Cyl. Misfire Detected |
| P0302 | No. 2 Cyl. Misfire Detected |
| P0303 | No. 3 Cyl. Misfire Detected |
| P0304 | No. 4 Cyl. Misfire Detected |
| P0325 | Knock Sensor |
| P0335 | Crankshaft Position Sensor |
| P0340 | Camshaft Position Sensor |
| P0400 | EGR Function |
| P0402 | EGR Backpressure Transducer Valve |
| P0420 | Three-Way Catalyst Malfunction |
| P0440 | EVAP System Leak Detected |
| P0443 | EVAP Purge Control Failure |
| P0446 | EVAP Vent Control Valve (EVAP-VCV) |
| P0450 | EVAP System Pressure Sensor |
| P0500 | Vehicle Speed Sensor (VSS) |
| P0505 | Idle Air Control (IAC) Valve |
| P0510 | Closed Throttle Position (TP) Sensor |
| P0605 | Signals Not Normal/Faulty PCM |
| P1105 | MAP/BARO Switch Circuit |
| P1110 | Intake Valve Timing Control |
| P1148 | Closed Loop Fault Detected |
| P1220 | Fuel Pump Control Module (FPCM) |
| P1320 | Ignition Signal Circuit |
| P1336 | Crankshaft Position Sensor |
| P1400 | EGRC Solenoid |
| P1401 | EGR Temperature Sensor |
| P1402 | EGR System Fault Detected |
| P1440 | EVAP System Leak Detected |
| P1444 | Evaporative Emission (EVAP) Canister Purge Volume Control Valve |
| P1446 | EVAP Vent Control Valve (EVAP-VCV) |
| P1447 | EVAP Purge Flow/Volume Control |
| P1448 | EVAP Vent Control Valve (EVAP-VCV) |
| P1490 | EVAP-VCV By-Pass Valve |
| P1491 | Vacuum Cut Valve By-Pass Valve |
| P1492 | EVAP Purge Control Fault Detected |
| P1493 | EVAP Purge Control Fault Detected |
| P1605 | TCM Communication Signal |
| P1706 | Park/Neutral Position (PNP) Switch |
| P1775 | Torque Converter Clutch Solenoid Valve |
| P1776 | Torque Converter Clutch Solenoid Valve |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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