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 Isuzu Oasis LSFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0107 | MAP SENSOR CIRCUIT LOW VOLTAGE INPUT (HIGH VACUUM) |
| P0108 | MAP SENSOR CIRCUIT HIGH VOLTAGE INPUT (LOW VACUUM) |
| P0112 | INTAKE AIR TEMPERATURE (IAT) SENSOR LOW VOLTAGE INPUT |
| P0113 | INTAKE AIR TEMPERATURE (IAT) SENSOR HIGH VOLTAGE INPUT |
| P0116 | ENGINE COOLANT TEMPERATURE SENSOR RANGE/PERFORMANCE PROBLEM |
| P0117 | ENGINE COOLANT TEMPERATURE SENSOR LOW VOLTAGE INPUT |
| P0118 | ENGINE COOLANT TEMPERATURE SENSOR HIGH VOLTAGE INPUT |
| P0122 | THROTTLE POSITION (TP) SENSOR LOW VOLTAGE INPUT |
| P0123 | THROTTLE POSITION (TP) SENSOR HIGH VOLTAGE INPUT |
| P0131 | PRIMARY HO2S-1 SENSOR LOW VOLTAGE |
| P0132 | PRIMARY HO2S-1 SENSOR HIGH VOLTAGE |
| P0133 | PRIMARY HO2S-1 SENSOR SLOW RESPONSE |
| P0135 OR P0141 | HO2S SENSOR HEATER CIRCUIT MALFUNCTION |
| P0137 | SECONDARY HO2S-2 SENSOR LOW VOLTAGE |
| P0138 | SECONDARY HO2S-2 SENSOR HIGH VOLTAGE |
| P0139 | SECONDARY HO2S-2 SENSOR SLOW RESPONSE |
| P0171/P0172 | FUEL SUPPLY SYSTEM (TOO LEAN OR TOO RICH) |
| P0300 | RANDOM CYLINDER MISFIRE DETECTED |
| P0301 | MISFIRE IN ONE CYLINDER DETECTED |
| P0302 | MISFIRE IN ONE CYLINDER DETECTED |
| P0303 | MISFIRE IN ONE CYLINDER DETECTED |
| P0304 | MISFIRE IN ONE CYLINDER DETECTED |
| P0325 | KNOCK SENSOR (KS) CIRCUIT MALFUNCTION |
| P0335/P0336 | CKP/TDC SENSOR |
| P0401 | EGR SYSTEM INSUFFICIENT FLOW |
| P0420 | CATALYTIC SYSTEM EFFICIENCY BELOW THRESHOLD |
| P0452 | FUEL TANK PRESSURE (FTP) SENSOR LOW VOLTAGE |
| P0453 | FUEL TANK PRESSURE (FTP) SENSOR HIGH VOLTAGE |
| P0505 | IDLE CONTROL SYSTEM MALFUNCTION |
| P1106 | BARO SENSOR RANGE/PERFORMANCE PROBLEM |
| P1107/P1108 | BARO SENSOR |
| P1121/P1122 | THROTTLE POSITION (TP) SENSOR |
| P1128 | MANIFOLD ABSOLUTE PRESSURE (MAP) LOWER THAN EXPECTED |
| P1129 | MANIFOLD ABSOLUTE PRESSURE (MAP) HIGHER THAN EXPECTED |
| P1259 | VTEC PRESSURE SWITCH & SOLENOID VALVE CIRCUITS |
| P1297 | ELECTRICAL LOAD DETECTOR (ELD) LOW VOLTAGE INPUT |
| P1298 | ELECTRICAL LOAD DETECTOR (ELD) HIGH VOLTAGE INPUT |
| P1359 | CRANKSHAFT POSITION/TOP DEAD CENTER (CKP/TDC) SENSOR |
| P1361/P1362 | TDC SENSOR |
| P1381/P1382 | CYP SENSOR |
| P1456/P1457 | EVAP SYSTEM LEAK DETECTED |
| P1491 | EGR SYSTEM MALFUNCTION |
| P1498 | EGR VALVE LIFT SENSOR HIGH VOLTAGE |
| P1519 | IDLE AIR CONTROL (IAC) VALVE |
| P1607 | PCM INTERNAL CIRCUIT |
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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