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.
1997 Geo Tracker LSi, RWDFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DTCS
| DTC | Description |
|---|---|
| P0101 | MASS AIRFLOW (MAF) CIRCUIT PERFORMANCE PROBLEM |
| P0102 | MASS AIRFLOW (MAF) CIRCUIT LOW INPUT |
| P0103 | MASS AIRFLOW (MAF) CIRCUIT HIGH INPUT |
| P0112 | INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT LOW INPUT |
| P0113 | INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT HIGH INPUT |
| P0117 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT LOW INPUT |
| P0118 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT HIGH INPUT |
| P0121 | THROTTLE POSITION (TP) SENSOR SYSTEM PERFORMANCE |
| P0122 | THROTTLE POSITION (TP) SENSOR CIRCUIT LOW INPUT |
| P0123 | THROTTLE POSITION (TP) SENSOR CIRCUIT HIGH INPUT |
| P0125 | EXCESSIVE TIME TO ENTER CLOSED LOOP |
| P0131 | HEATED OXYGEN SENSOR (HO2S) NO. 1 CIRCUIT VOLTAGE LOW |
| P0132 | HEATED OXYGEN SENSOR (HO2S) NO. 1 CIRCUIT VOLTAGE HIGH |
| P0133 | HEATED OXYGEN SENSOR (HO2S) NO. 1 SLOW RESPONSE |
| P0134 | HEATED OXYGEN SENSOR (HO2S) NO. 1 CIRCUIT ACTIVITY INSUFFICIENT |
| P0135 | HEATED OXYGEN SENSOR (HO2S) NO. 1 HEATER CIRCUIT MALFUNCTION |
| P0136 | HEATED OXYGEN SENSOR (HO2S) NO. 2 CIRCUIT MALFUNCTION |
| P0141 | HEATED OXYGEN SENSOR (HO2S) NO. 2 HEATER CIRCUIT MALFUNCTION |
| P0171 | FUEL TRIM SYSTEM LEAN |
| P0172 | FUEL TRIM SYSTEM RICH |
| P0300 | RANDOM MISFIRE |
| P0301 | RANDOM MISFIRE |
| P0302 | CYLINDERS NO. 1-4 MISFIRE |
| P0303 | CYLINDERS NO. 1-4 MISFIRE |
| P0304 | CYLINDERS NO. 1-4 MISFIRE |
| P0335 | CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT MALFUNCTION |
| P0340 | CAMSHAFT POSITION (CMP) SENSOR CIRCUIT MALFUNCTION |
| P0400 | EXHAUST GAS RECIRCULATION (EGR) FLOW MALFUNCTION |
| P0420 | THREE-WAY CATALYST (TWC) SYSTEM EFFICIENCY LOW |
| P0440 | EVAPORATIVE (EVAP) CONTROL SYSTEM MALFUNCTION |
| P0455 | EVAPORATIVE (EVAP) CONTROL SYSTEM LEAK DETECTED |
| P0443 | EVAPORATIVE (EVAP) CONTROL SYSTEM PURGE FLOW INCORRECT |
| P0450 | EVAPORATIVE (EVAP) CONTROL SYSTEM PRESSURE SENSOR MALFUNCTION |
| P0461 | FUEL LEVEL SENSOR CIRCUIT PERFORMANCE |
| P0463 | FUEL LEVEL SENSOR CIRCUIT VOLTAGE HIGH |
| P0500 | VEHICLE SPEED SENSOR (VSS) MALFUNCTION |
| P0505 | IDLE AIR CONTROL (IAC) SYSTEM MALFUNCTION |
| P0510 | CLOSED THROTTLE POSITION (CTP) SWITCH MALFUNCTION |
| P0601 | PCM MEMORY ERROR |
| P0603 | KEEP ALIVE MEMORY ERROR |
| P1301 | CYLINDERS NO. 1-4 MISFIRE |
| P1408 | MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR CIRCUIT MALFUNCTION |
| P1410 | FUEL TANK PRESSURE CONTROL SYSTEM MALFUNCTION |
| P1450 | BAROMETRIC PRESSURE SENSOR CIRCUIT MALFUNCTION |
| P1451 | BAROMETRIC PRESSURE SENSOR PERFORMANCE PROBLEM |
| P1500 | ENGINE STARTER SIGNAL CIRCUIT MALFUNCTION |
| P1510 | ECM BACKUP POWER SUPPLY MALFUNCTION |
| P1530 | IGNITION TIMING ADJUSTMENT SWITCH CIRCUIT MALFUNCTION |
| P1715 | PARK NEUTRAL POSITION (PNP) SWITCH CIRCUIT MALFUNCTION |
Factory Service Tools
Use the Manual With the Right Hardware
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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.