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.
2000 Mazda Protege ES, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Performance (1.6L) DTCS
ENGINE PERFORMANCE (1.6L) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0102 | MASS AIRFLOW (MAF) SENSOR CIRCUIT LOW INPUT |
| P0103 | MASS AIRFLOW (MAF) SENSOR CIRCUIT HIGH INPUT |
| P0106 | BARO CIRCUIT PERFORMANCE PROBLEM |
| P0107 | BARO CIRCUIT LOW INPUT |
| P0108 | BARO CIRCUIT HIGH INPUT |
| P0111 | INTAKE AIR TEMPERATURE (IAT) SENSOR PERFORMANCE PROBLEM |
| P0112 | INTAKE AIR TEMPERATURE (IAT) SENSOR LOW INPUT |
| P0113 | INTAKE AIR TEMPERATURE (IAT) SENSOR HIGH INPUT |
| P0117 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT LOW INPUT |
| P0118 | ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT HIGH INPUT |
| P0122 | THROTTLE POSITION (TP) SENSOR CIRCUIT LOW INPUT |
| P0123 | THROTTLE POSITION (TP) SENSOR CIRCUIT HIGH INPUT |
| P0125 | EXCESSIVE TIME TO ENTER CLOSED LOOP |
| P0130 | FRONT HEATED OXYGEN SENSOR MALFUNCTION |
| P0134 | FRONT HEATED OXYGEN SENSOR, NO ACTIVITY DETECTED |
| P0138 | REAR HEATED OXYGEN SENSOR CIRCUIT HIGH INPUT |
| P0140 | REAR HEATED OXYGEN SENSOR, NO ACTIVITY DETECTED |
| P0171 | FUEL TRIM TOO LEAN |
| P0172 | FUEL TRIM TOO RICH |
| 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 |
| P0335 | CRANKSHAFT POSITION SENSOR CIRCUIT MALFUNCTION |
| P0401 | EGR FLOW INSUFFICIENT |
| P0402 | EGR FLOW MALFUNCTION |
| P0420 | CATALYTIC CONVERTER EFFICIENCY BELOW LIMIT |
| P0421 | CATALYTIC CONVERTER EFFICIENCY BELOW LIMIT |
| P0442 | EVAP SYSTEM MALFUNCTION, LEAK DETECTED |
| P0443 | EVAP SYSTEM, PURGE CONTROL VALVE CIRCUIT MALFUNCTION |
| P0451 | FUEL TANK PRESSURE (FTP) SENSOR PERFORMANCE MALFUNCTION |
| P0452 | EVAP SYSTEM, PRESSURE SENSOR LOW INPUT |
| P0453 | EVAP SYSTEM, PRESSURE SENSOR HIGH INPUT |
| P0455 | EVAP SYSTEM MALFUNCTION, EXCESSIVE LEAK DETECTED |
| P0461 | FUEL LEVEL SENSOR CIRCUIT PERFORMANCE |
| P0462 | FUEL LEVEL SENSOR CIRCUIT LOW INPUT |
| P0463 | FUEL LEVEL SENSOR CIRCUIT HIGH INPUT |
| P0464 | FUEL LEVEL SENSOR CIRCUIT PERFORMANCE (SLOSH CHECK) |
| P0500 | VEHICLE SPEED SENSOR (VSS) MALFUNCTION |
| P0506 | IDLE CONTROL SYSTEM RPM LOWER THAN EXCEPTED |
| P0507 | IDLE CONTROL SYSTEM RPM HIGHER THAN EXCEPTED |
| P0550 | POWER STEERING SWITCH MALFUNCTION |
| P0703 | BRAKE SWITCH MALFUNCTION |
| P0704 | CLUTCH SWITCH MALFUNCTION |
| P0705 | NEUTRAL SWITCH CIRCUIT MALFUNCTION |
| P1102 | MAF SENSOR INCONSISTENT WITH TP SENSOR (LESS THAN EXCEPTED) |
| P1103 | MAF SENSOR INCONSISTENT WITH RPM SENSOR (MORE THAN EXCEPTED) |
| P1122 | TP SENSOR STUCK CLOSED |
| P1123 | TP SENSOR STUCK OPEN |
| P1135 | FRONT O2 SENSOR HEATER CIRCUIT LOW |
| P1136 | FRONT HEATED OXYGEN SENSOR HIGH HEATER CIRCUIT INPUT |
| P1141 | REAR HEATED OXYGEN SENSOR LOW HEATER CIRCUIT INPUT |
| P1142 | REAR HEATED OXYGEN SENSOR HIGH HEATER CIRCUIT INPUT |
| P1170 | FRONT HEATED OXYGEN SENSOR, INVERSION |
| P1250 | PRESSURE REGULATOR CONTROL (PRC) SOLENOID VALVE MALFUNCTION |
| P1345 | CAMSHAFT POSITION (CMP) SENSOR CIRCUIT MALFUNCTION |
| P1449 | CANISTER DRAIN CUT VALVE (CDCV), OPEN OR SHORT CIRCUIT |
| P1450 | EVAP SYSTEM MALFUNCTION, EXCESSIVE LEAK DETECTED |
| P1487 | EGR BOOST SENSOR SOLENOID VALVE CIRCUIT MALFUNCTION |
| P1496 | EGR VALVE STEPPING MOTOR NO. 1 COIL, OPEN OR SHORT CIRCUIT |
| P1497 | EGR VALVE STEPPING MOTOR NO. 2 COIL, OPEN OR SHORT CIRCUIT |
| P1498 | EGR VALVE STEPPING MOTOR NO. 3 COIL, OPEN OR SHORT CIRCUIT |
| P1499 | EGR VALVE STEPPING MOTOR NO. 4 COIL, OPEN OR SHORT CIRCUIT |
| P1504 | IDLE AIR CONTROL CIRCUIT MALFUNCTION |
| P1512 | VARIABLE TUMBLE CONTROL SYSTEM (VTCS) MALFUNCTION |
| P1562 | LOW VOLTAGE TO PCM POWER SUPPLY CIRCUIT |
| P1569 | VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SOLENOID VALVE CIRCUIT, LOW INPUT |
| P1570 | VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SOLENOID VALVE CIRCUIT, HIGH INPUT |
| P1631 | GENERATOR MALFUNCTION |
| P1632 | BATTERY VOLTAGE CIRCUIT MALFUNCTION |
| P1633 | BATTERY VOLTAGE CIRCUIT, OVERCHARGING CONDITION |
| P1634 | GENERATOR BATTERY TERMINAL, OPEN 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.