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 MANUALSMAZDA1990626 LX, 4D HATCHBACK, 2.2 1, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODESTROUBLE CODE IDENTIFICATION CHART (TURBO)TROUBLE CODE IDENTIFICATION TABLE (TURBO)
1990 Mazda 626 LX, 4D Hatchback, 2.2 1, Automatic
Trouble Code Identification Table (Turbo)
1990 Mazda 626 LX, 4D Hatchback, 2.2 1, AutomaticSECTION Trouble Code Identification Table (Turbo)
TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| CODE 1 | Ignition Pulse |
| CODE 2 | NE Signal-Distributor |
| CODE 3 | G1 Signal-Distributor |
| CODE 4 | G2 Signal-Distributor |
| CODE 5 | Knock Sensor & Knock Control Unit |
| CODE 8 | Airflow Sensor |
| CODE 9 | Coolant Thermosensor |
| CODE 10 | Intake Air Thermosensor |
| CODE 12 | Throttle Sensor |
| CODE 14 | Atmospheric Pressure Sensor |
| CODE 15 | Oxygen Sensor |
| CODE 16 | EGR Position Sensor |
| CODE 17 | Feedback System |
| CODE 25 | Pressure Regulator Solenoid Valve |
| CODE 26 | Purge Solenoid Valve |
| CODE 28 | EGR Vacuum Solenoid Valve |
| CODE 29 | EGR Vent Solenoid Valve |
| CODE 34 | Idle Speed Control (ISC) |
| CODE 42 | Wastegate Solenoid Valve |
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.