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 Chevrolet Tracker 4D Utility, 4WD, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Powertrain OBD System Check
- Self-Diagnostic System
- Pcm Circuit Identification
- Summary
- Diagnostic Trouble Codes
- DTC P0101: Mass Airflow (MAF) Sensor System Performance
- DTC P0102: Mass Airflow (MAF) Sensor Circuit Low Frequency
- DTC P0103: Mass Airflow (MAF) Sensor Circuit High Frequency
- DTC P0111: Intake Air Temperature (IAT) Sensor Performance
- DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Voltage
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Voltage
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
- DTC P0121: Throttle Position (TP) Sensor System Performance
- DTC P0122: Throttle Position (TP) Sensor Circuit Low Voltage
- DTC P0123: Throttle Position (TP) Sensor Circuit High Voltage
- DTC P0125: Engine Coolant Temperature (ECT) Sensor Excessive Time To Enter Closed Loop
- DTC P0131: Heated Oxygen Sensor (Ho2S) Circuit Voltage Low (Sensor 1)
- DTC P0132: Heated Oxygen Sensor (Ho2S) Circuit Voltage High (Sensor 1)
- DTC P0133: Heated Oxygen Sensor (Ho2S) Slow Response (Sensor 1)
- DTC P0134: Heated Oxygen Sensor (Ho2S) Circuit Insufficient Activity (Sensor 1)
- DTC P0135: Heated Oxygen Sensor (Ho2S) Heater Circuit (Sensor 1)
- DTC P0136: Heated Oxygen Sensor (Ho2S) Circuit (Sensor 2)
- DTC P0141: Heated Oxygen Sensor (Ho2S) Heater Circuit (Sensor 2)
- DTC P0171: Fuel Trim System Lean
- DTC P0172: Fuel Trim System Rich
- DTC P0300, P0301, P0302, P0303, P0304: Engine Misfire Detected
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit
- DTC P0340: Camshaft Position (CMP) Sensor Circuit
- DTC P0400: Exhaust Gas RECIRCULATION (EGR) System
- DTC P0420: Three-Way Catalyst (TWC) System Low Efficiency
- DTC P0440: Evaporative (EVAP) Emissions System
- DTC P0443: Evaporative (EVAP) Emission System Incorrect Purge Flow
- DTC P0450: Evaporative (EVAP) Emission System Pressure Sensor Circuit
- DTC P0451: Evaporative (EVAP) Emission System Pressure Sensor Performance
- DTC P0455: Evaporative (EVAP) Emission System Leak Detected
- DTC P0461 & P0463: Fuel Level Sensor Circuit
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit
- DTC P0505: Idle Control System
- DTC P0510: Closed Throttle Position Switch Circuit
- DTC P0601 & P0603: Powertrain Control Module (Pcm) Memory
- DTC P1408: Manifold Absolute Pressure (Map) Sensor Circuit
- DTC P1410: Fuel Tank Pressure System
- DTC P1450: Barometric Pressure Sensor Circuit
- DTC P1451: Barometric Pressure Sensor Performance
- DTC P1500: Starter Signal Circuit
- DTC P1510: Powertrain Control Module (Pcm) Backup Power Supply
- DTC P1530: Ignition Timing Adjustment Switch 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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