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.
1995 Mazda Millenia BaseFACTORY OEM SERVICE PROCEDURE
Engine Performance DTCS
ENGINE PERFORMANCE DTCS
| DTC | Description |
|---|---|
| P0100 | MASS AIR FLOW CIRCUIT MALFUNCTION |
| P0110 | INTAKE AIR TEMPERATURE CIRCUIT MALFUNCTION |
| P0115 | ENGINE COOLANT TEMPERATURE CIRCUIT MALFUNCTION |
| P0120 | THROTTLE POSITION CIRCUIT MALFUNCTION |
| P0125 | EXCESSIVE TIME TO ENTER CLOSED LOOP FUEL CONTROL |
| P0130 | OXYGEN SENSOR CIRCUIT MALFUNCTION |
| P0134 | OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED |
| P0135 | OXYGEN SENSOR HEATER CIRCUIT MALFUNCTION |
| P0140 | OXYGEN SENSOR CIRCUIT MALFUNCTION |
| P0150 | OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED |
| P0154 | OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED |
| P0155 | OXYGEN SENSOR HEATER CIRCUIT MALFUNCTION |
| P0160 | OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED |
| P0170 | FUEL TRIM MALFUNCTION |
| P0173 | FUEL TRIM MALFUNCTION |
| P0300 | RANDOM MISFIRE DETECTED |
| P0301 | CYLINDER NO. 1 MISFIRE DETECTED |
| P0302 | CYLINDER NO. 2 MISFIRE DETECTED |
| P0303 | CYLINDER NO. 3 MISFIRE DETECTED |
| P0304 | CYLINDER NO. 4 MISFIRE DETECTED |
| P0305 | CYLINDER NO. 5 MISFIRE DETECTED |
| P0306 | CYLINDER NO. 6 MISFIRE DETECTED |
| P0325 | KNOCK SENSOR NO. 1 CIRCUIT MALFUNCTION |
| P0335 | CRANKSHAFT POSITION SENSOR CIRCUIT MALFUNCTION |
| P0400 | EXHAUST GAS RECIRCULATION FLOW MALFUNCTION |
| P0420 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD |
| P0430 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD |
| P0440 | EVAPORATIVE EMISSION CONTROL SYSTEM MALFUNCTION |
| P0443 | EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CONTROL VALVE CIRCUIT MALFUNCTION |
| P0500 | VEHICLE SPEED SENSOR MALFUNCTION |
| P0505 | IDLE CONTROL SYSTEM MALFUNCTION |
| P0510 | CLOSED THROTTLE POSITION SWITCH MALFUNCTION |
| P0703 | BRAKE SWITCH INPUT MALFUNCTION |
| P1000 | READINESS FUNCTION CODE |
| P1170 | FRONT RIGHT HEATED OXYGEN SENSOR - INVERSION |
| P1173 | FRONT LEFT HEATED OXYGEN SENSOR - INVERSION |
| P1195 | BAROMETRIC ABSOLUTE PRESSURE SENSOR |
| P1196 | STARTER |
| P1250 | PRC SOLENOID VALVE |
| P1345 | SGC SIGNAL |
| P1402 | EGR VALVE POSITION SENSOR |
| P1485 | EGR VACUUM SOLENOID VALVE |
| P1486 | EGR VENT SOLENOID VALVE |
| P1487 | EGR BOOST SENSOR SOLENOID VALVE |
| P1521 | VRIS SOLENOID VALVE NO. 1 |
| P1522 | VRIS SOLENOID VALVE NO. 2 |
| P1601 | COMMUNICATION LINE - ECM-TCM |
| P1608 | ECM |
| P1794 | BATTERY |
| P1797 | P OR N POSITION SIGNAL |
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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