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 Mazda MPV ES, 3.0 2FACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes - Testing
- Self-Diagnostics
- Diagnostic Trouble Codes
- Diagnostic Trouble Code Identification Table
- DTC P0100: Mass Airflow (MAF) Sensor Circuit Malfunction
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit Malfunction
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Circuit Malfunction
- DTC P0120: Throttle Position (TP) Sensor Circuit Malfunction
- DTC P0125: Excessive Time To Enter Closed Loop
- DTC P0130: Front Heated Oxygen Sensor Malfunction
- DTC P0134: Front Heated Oxygen Sensor, Insufficient Activity Detected
- DTC P0135: Front Oxygen Sensor Heater Malfunction
- DTC P0140: Rear Heated Oxygen Sensor, Insufficient Activity Detected
- DTC P0141: Rear Oxygen Sensor Heater Malfunction
- DTC P0170: Bank No. 1, Fuel Trim Malfunction
- DTC P0300: Random Misfire Detected
- DTC P0301-P0306: Cylinders No. 1-6 Misfire Detected
- DTC P0335: Crankshaft Position Sensor Circuit Malfunction
- DTC P0420: Bank No. 1 Catalytic Converter Efficiency Below Limit
- DTC P0442: EVAP System Malfunction, Leak Detected
- DTC P0443: EVAP System, Purge Control Valve Circuit Malfunction
- DTC P0446: Canister Drain Cut Valve (CDCV) Malfunction
- DTC P0450: Fuel Tank Pressure Sensor Malfunction
- DTC P0455: EVAP System Malfunction, Excessive Leak Detected
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction
- DTC P0505: Idle Control System Malfunction
- DTC P0510: Closed Throttle Position Switch Malfunction
- DTC P0550: Power Steering Switch Malfunction
- DTC P0703: Brake Switch Malfunction
- DTC P1110: Intake Air Temperature (IAT) Sensor Dynamic Chamber (D/C) Circuit Malfunction
- DTC P1170: Front Oxygen Sensor -Inversion
- DTC P1195: EGR Boost Sensor, Barometric Pressure Signal Malfunction
- DTC P1196: Starter Switch, Open Or Short Circuit
- DTC P1250: Pressure Regulator Control (PRC) Solenoid Valve No. 1 Malfunction
- DTC P1252: Pressure Regulator Control (PRC) Solenoid Valve No. 2 Malfunction
- DTC P1345: Camshaft Position Sensor, No SGC Signal
- DTC P1449: Canister Drain Cut Valve (CDCV), Open Or Short Circuit
- DTC P1450: EVAP System Malfunction, Excessive Leak Detected
- DTC P1455: Fuel Tank Level, Open Or Short Circuit
- DTC P1521: Variable Resonance Induction System No. 1 (VRIS1), Open Or Short Circuit
- DTC P1527: Air By-Pass Solenoid, Open Or Short Circuit
- DTC P1601: Communication Line Error (Automatic Transmission)
- DTC P1608: Powertrain Control Module (CPU) Malfunction
- DTC P1794: Battery Supply Circuit Malfunction
- DTC P1797: Transmission Range Switch (A/T) 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.