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.
2001 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Identification
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION - MPV
| DTC | Diagnostic System Affected | ||
|---|---|---|---|
| P0031 | Right Front HO2S Heater Circuit Low | ||
| P0032 | Right Front HO2S Heater Circuit High | ||
| P0037 | Right Rear HO2S Heater Circuit Low | ||
| P0038 | Right Rear HO2S Heater Circuit High | ||
| P0051 | Left Front HO2S Heater Circuit Low | ||
| P0052 | Left Front HO2S Heater Circuit High | ||
| P0057 | Left Rear HO2S Heater Circuit Low | ||
| P0058 | Left Rear HO2S Heater Circuit High | ||
| P0102 | MAF Sensor Input Low | ||
| P0103 | MAF Sensor Input Low | ||
| P0106 | BARO Circuit Problem | ||
| P0107 | BARO Sensor Input Low | ||
| P0108 | BARO Sensor Input High | ||
| P0111 | IAT Circuit Problem | ||
| P0112 | IAT Sensor Input Low | ||
| P0113 | IAT Sensor Input High | ||
| P0116 | ECT Circuit Problem | ||
| P0117 | ECT Sensor Input Low | ||
| P0118 | ECT Sensor Input High | ||
| P0122 | TP Sensor Input Low | ||
| P0123 | TP Sensor Input High | ||
| P0125 | Excessive Time To Enter Closed Loop | ||
| P0128 | Thermostat Stuck Open | ||
| P0130 | Right Front HO2S Malfunction | ||
| P0134 | Right Front HO2S - No Activity Detected | ||
| P0138 | Right Rear HO2S - Input High | ||
| P0140 | Right Rear HO2S - No Activity Detected | ||
| P0150 | Left Front HO2S Malfunction | ||
| P0154 | Left Front HO2S - No Activity Detected | ||
| P0158 | Left Rear HO2S - Input High | ||
| P0160 | Left Rear HO2S - No Activity Detected | ||
| P0171 | Right Bank Fuel Trim Too Lean | ||
| P0172 | Right Bank Fuel Trim Too Rich | ||
| P0174 | Left Bank Fuel Trim Too Lean | ||
| P0175 | Left Bank Fuel Trim Too Rich | ||
| P0300 | Random Misfire Detected | ||
| P0301- P0306 | Cylinders No. 1-6 Misfire Detected | ||
| P0325 | Knock Sensor Circuit Problem | ||
| P0335 | Crankshaft Position Sensor Circuit Malfunction | ||
| P0401 | EGR Flow Too Low | ||
| P0402 | EGR Flow Too High | ||
| P0421 | Warm Up Catalytic Converter Efficiency Below Limit | ||
| P0431 | Warm Up Catalytic Converter Efficiency Below Limit | ||
| P0442 | Evap System Malfunction - Small Leak Detected | ||
| P0443 | Evap System - Purge Control Valve Circuit Malfunction | ||
| P0451 | Fuel Tank Pressure Sensor Malfunction | ||
| P0452 | Fuel Tank Pressure Sensor Input Low | ||
| P0453 | FTP Sensor Input High | ||
| P0455 | Evap System Malfunction - Block Or Large Leak Detected | ||
| P0456 | Evap System Malfunction - Small Leak Detected | ||
| P0461 | Fuel Gauge Sending Unit Circuit Malfunction | ||
| P0462 | Fuel Gauge Sending Unit Circuit Input Low | ||
| P0463 | Fuel Gauge Sending Unit Circuit Input High | ||
| P0464 | Fuel Gauge Sending Unit Circuit Performance | ||
| P0500 (1) | Vehicle Speed Sensor (VSS) Circuit Malfunction | ||
| P0506 | Idle Control - RPM Low | ||
| P0507 | Idle Control - RPM High | ||
| P0550 | Power Steering Switch Malfunction | ||
| P0703 | Brake Switch Malfunction | ||
| P0705 (1) | Automatic Transaxle | ||
| P0706 (1) | Automatic Transaxle | ||
| P0710 (1) | Automatic Transaxle | ||
| P0711 (1) | Automatic Transaxle | ||
| P0715 (1) | Automatic Transaxle | ||
| P0731 (1) | Automatic Transaxle | ||
| P0732 (1) | Automatic Transaxle | ||
| P0733 (1) | Automatic Transaxle | ||
| P0734 (1) | Automatic Transaxle | ||
| P0740 (1) | Automatic Transaxle | ||
| P0743 (1) | Automatic Transaxle | ||
| P0745 (1) | Automatic Transaxle | ||
| P0750 (1) | Automatic Transaxle | ||
| P0755 (1) | Automatic Transaxle | ||
| P0760 (1) | Automatic Transaxle | ||
| P1102 | MAF Sensor Inconsistent With TP Sensor (Less Than Expected) | ||
| P1103 | MAF Sensor Inconsistent With Engine Speed (More Than Expected) | ||
| P1122 | TP Sensor Stuck Closed (Less Than Expected) | ||
| P1123 | TP Sensor Stuck Open (More Than Expected) | ||
| P1170 | Right Front Oxygen Sensor - No Inversion | ||
| P1173 | Left Front Oxygen Sensor - No Inversion | ||
| P1250 | Pressure Regulator Control (PRC) Solenoid Valve Circuit Malfunction | ||
| P1309 | PCM Internal Malfunction | ||
| P1345 | Camshaft Position Sensor Circuit Malfunction | ||
| P1449 | Canister Drain Cut Valve (CDCV) - Circuit Malfunction | ||
| P1450 | EVAP System Malfunction - Excessive Vacuum | ||
| P1487 | EGR Boost Sensor Circuit Malfunction | ||
| P1496 | EGR Valve Motor Coil No. 1 Open Or Short | ||
| P1497 | EGR Valve Motor Coil No. 2 Open Or Short | ||
| P1498 | EGR Valve Motor Coil No. 3 Open Or Short | ||
| P1499 | EGR Valve Motor Coil No. 4 Open Or Short | ||
| P1504 | IAC Valve Circuit Malfunction | ||
| P1512 | IMRC Shutter Valve Stuck Closed | ||
| P1518 | IMRC Shutter Valve Stuck Open | ||
| P1520 | IMRC Drive Circuit Malfunction | ||
| P1562 | PCM Backup Battery Voltage Low | ||
| P1602 | Immobilizer To PCM Communication Error | ||
| P1603 | Code Word Is Not Registered In PCM | ||
| P1604 | Key ID Numbers Not Registered In PCM | ||
| P1621 | Code Word Does Not Match After Engine Crank | ||
| P1622 | Key ID Does Not Match | ||
| P1623 | Code Word Or Key ID Read/Write Error In PCM | ||
| P1624 | Immobilizer System Communication Counter = 0 | ||
| P1631 | No Generator Output Voltage Signal | ||
| P1633 | Battery Overcharge | ||
| P1634 | Generator Terminal B Circuit Open | ||
| P1765 (1) | Automatic Transaxle | ||
|
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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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