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.
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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICSDIAGNOSTIC TROUBLE CODE IDENTIFICATION TABLE
1999 Mazda 626 ES, 2.5 D, Standard
Diagnostic Trouble Code Identification Table
1999 Mazda 626 ES, 2.5 D, StandardSECTION Diagnostic Trouble Code Identification Table
DIAGNOSTIC TROUBLE CODE IDENTIFICATON
| DTC | Description | ||
|---|---|---|---|
| P0102 | MASS Airflow (MAF) Sensor Circuit Malfunction | ||
| P0103 | MASS Airflow (MAF) Sensor Circuit Malfunction | ||
| P0106 | EGR Boost Sensor | ||
| P0107 | EGR Boost Sensor | ||
| P0108 | EGR Boost Sensor | ||
| P0112 | Temperature Sensor Input Low (IAT OR ECT) | ||
| P0113 | Temperature Sensor (IAT OR ECT) | ||
| P0117 | Temperature Sensor Input Low (IAT OR ECT) | ||
| P0118 | Temperature Sensor (IAT OR ECT) | ||
| P0122 | Throttle Position (TP) Sensor Low Input | ||
| P0123 | Throttle Position (TP) Sensor High Input | ||
| P0125 | Excessive Time To Enter Closed Loop | ||
| P0133 | Heated Oxygen Sensor (Low Response) | ||
| P0135 | Heated Oxygen Sensor Heater | ||
| P0136 | Fuel Control | ||
| P0141 | Heated Oxygen Sensor Heater | ||
| P0142 | Fuel Control | ||
| P0147 | Heated Oxygen Sensor Heater | ||
| P0153 | Heated Oxygen Sensor (Low Response) | ||
| P0155 | Heated Oxygen Sensor Heater | ||
| P0171 | Fuel Control - HO2S Not Switching | ||
| P0172 | Fuel Control - HO2S Not Switching | ||
| P0174 | Fuel Control - HO2S Not Switching | ||
| P0175 | Fuel Control - HO2S Not Switching | ||
| P0230 | Fuel Pump Relay | ||
| P0300 | Random Misfire Detected | ||
| P0301 | Cylinders No. 1 Misfire Detected | ||
| P0302 | Cylinders No. 2 Misfire Detected | ||
| P0303 | Cylinders No. 3 Misfire Detected | ||
| P0304 | Cylinders No. 4 Misfire Detected | ||
| P0305 | Cylinders No. 5 Misfire Detected | ||
| P0306 | Cylinders No. 6 Misfire Detected | ||
| P0320 | Distributor Ignition | ||
| P0325 | Knock Sensor (KS) Circuit | ||
| P0340 | Camshaft Position (CMP) Sensor Circuit | ||
| P0400 | EGR Flow Malfunction | ||
| P0420 | Catalyst Efficiency Monitor & Exhaust Systems | ||
| P0421 | Catalyst Efficiency Monitor & Exhaust Systems | ||
| P0442 | EVAP System Malfunction, Leak Detected | ||
| P0443 | EVAP Canister Purge (CANP) Solenoid | ||
| P0446 | EVAP System | ||
| P0452 | Fuel Tank Pressure Sensor Malfunction | ||
| P0453 | EVAP System Malfunction, Pressure Sensor Range/Performance Malfunction | ||
| P0455 | EVAP System Malfunction, Excessive Leak Detected | ||
| P0460 | Fuel Gauge Sending Unit | ||
| P0500 | Vehicle Speed Sensor (VSS) Malfunction | ||
| P0505 | Idle Control System Malfunction | ||
| P0603 | Closed Throttle Position Switch Malfunction | ||
| P0605 | Power Steering Switch Malfunction | ||
| P0703 | Brake Switch Malfunction | ||
| P0704 | Clutch Switch Input Circuit | ||
| (1)P0705 | Transaxle Range Switch Circuit Fault | ||
| (1)P0706 | Transaxle Range Switch Range/Performance | ||
| (1)P0707 | TR Sensor Circuit Shorted | ||
| (1)P0708 | TR Sensor Circuit Opened | ||
| (1)P0710 | TFT Sensor Circuit Fault | ||
| (1)P0711 | TFT Sensor range/Performance | ||
| (1)P0712 | TFT Sensor Circuit Shorted | ||
| (1)P0713 | TFT Sensor Circuit Open | ||
| (1)P0715 | Insufficient Input From TSS | ||
| (1)P0731 | Incorrect 1st Gear Ratio | ||
| (1)P0732 | Incorrect 2nd Gear Ratio | ||
| (1)P0733 | Incorrect 3rd Gear Ratio | ||
| (1)P0734 | Incorrect 4th Gear Ratio | ||
| (1)P0740 | TCC System Malfunction | ||
| (1)P0741 | TCC Engagement Error | ||
| (1)P0743 | TCC Circuit Error | ||
| (1)P0745 | Pressure Control Solenoid Malfunction | ||
| (1)P0750 | Shift Solenoid Circuit Failure | ||
| (1)P0751 | Shift Solenoid Hydraulic/Mechanical Malfunction | ||
| (1)P0755 | Shift Solenoid Circuit Failure | ||
| (1)P0756 | Shift Solenoid Hydraulic/Mechanical Malfunction | ||
| (1)P0760 | Shift Solenoid Circuit Failure | ||
| P1001 | Unable To Activate Self-Test/Scp Communication Error Code Not Listed | ||
| P1100 | Mass Airflow (MAF) Sensor Intermittent | ||
| P1101 | Mass Airflow (MAF) Sensor Out Of Range | ||
| P1112 | Temperature Sensor (IAT OR ECT) | ||
| P1116 | Middle Heated Oxygen Sensor, Inversion | ||
| P1117 | Temperature Sensor (IAT OR ECT) | ||
| P1120 | Middle Heated Oxygen Sensor, Inversion | ||
| P1121 | Middle Heated Oxygen Sensor, Inversion | ||
| P1124 | Middle Heated Oxygen Sensor, Inversion | ||
| P1125 | Middle Heated Oxygen Sensor, Inversion | ||
| P1127 | Middle Heated Oxygen Sensor, Inversion | ||
| P1130 | Fuel Control - HO2S Not Switching | ||
| P1131 | Fuel Control - HO2S Not Switching | ||
| P1132 | Fuel Control - HO2S Not Switching | ||
| P1137 | Fuel Control | ||
| P1138 | Fuel Control | ||
| P1143 | Fuel Control | ||
| P1144 | Fuel Control | ||
| P1150 | Fuel Control - HO2S Not Switching | ||
| P1151 | Fuel Control - HO2S Not Switching | ||
| P1152 | Fuel Control - HO2S Not Switching | ||
| P1250 | Fuel Pressure Regulator Control (FPRC) Solenoid | ||
| P1409 | EGR Valve Malfunction | ||
| P1410 | EGR Boost Solenoid Valve Stuck | ||
| P1450 | EVAP Control System | ||
| P1451 | Canister Drain Cut Valve (CDCV) Malfunction | ||
| P1460 | WOT A/C Cut-Off (WAC) | ||
| P1460 | WOT A/C Cut-Off (Continuous Memory) | ||
| P1464 | A/C Demand Out Of Range | ||
| P1474 | Fan Control (FC) Relay (Continuous Memory) | ||
| P1474 | Fan Control (FC) Relay | ||
| P1479 | Fan Control (FC) Relay (Continuous Memory) | ||
| P1479 | Fan Control (FC) Relay | ||
| P1487 | EGR Boost Solenoid Valve Circuit | ||
| P1501 | Vehicle Speed Sensor (VSS) | ||
| P1504 | Idle Air Control (IAC) Valve | ||
| P1506 | Idle Air Control (IAC) Valve | ||
| P0507 | Idle Air Control (IAC) Valve | ||
| P1602 | Immobilizer Unit To PCM Communication | ||
| P1603 | Code Word Or Key ID Number Not Registered In PCM | ||
| P1604 | Code Word Or Key ID Number Not Registered In PCM | ||
| P1621 | Code Word Or Key ID Number Not Registered In PCM | ||
| P1622 | Key ID Number Does Not Match | ||
| P1623 | Code Word Or Key ID Number Read/Write Error In Pcm | ||
| P1624 | Immobilizer Communication Counter = 0 | ||
| P1650 | Power Steering Pressure (PSP) Switch | ||
| P1652 | Power Steering Pressure (PSP) Switch | ||
| (1)P1702 | TR Switch Intermittent | ||
| P1703 | Brake Switch Out Of Range | ||
| (1)P1705 | TR Switch Not In Park | ||
| (1)P1711 | TFT Out Of Range | ||
| (1)P1742 | TCC Solenoid Failure | ||
| (1)P1743 | TCC Solenoid Failure | ||
| (1)P1744 | TCC System Malfunction | ||
| (1)P1746 | Open PCM Output Driver | ||
| (1)P1747 | EPC Solenoid Circuit Failure | ||
| (1)P1751 | SS1 Solenoid Circuit Failure | ||
| (1)P1756 | SS1 Solenoid Electrical Malfunction | ||
| (1)P1765 | 3-2 Timing Solenoid Circuit Failure | ||
| (1)P1767 | TCC Solenoid Circuit Failure | ||
| (1)P1780 | OD/OFF Switch Malfunction | ||
| (1)P1783 | Transmission Overtemp. | ||
| (1)P1788 | 3-2T/CCS Solenoid Ckt Failure | ||
| (1)P1789 | 3-2T/CCS Solenoid Ckt Failure | ||
| (1)P1901 | TSS Sensor Intermittent | ||
|
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RENDER: 1.0x
NO RELATED
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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.