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 MANUALSMAZDA1991626 LX, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESTROUBLE CODE IDENTIFICATION CHART (NON-TURBO)TROUBLE CODE IDENTIFICATION TABLE (NON-TURBO)
1991 Mazda 626 LX, 4D Sedan, Standard
Trouble Code Identification Table (Non-Turbo)
1991 Mazda 626 LX, 4D Sedan, StandardSECTION Trouble Code Identification Table (Non-Turbo)
TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| CODE 1 | Ignition Pulse |
| 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 (Calif) |
| CODE 17 | Feedback System |
| CODE 25 | Pressure Regulator Solenoid Valve |
| CODE 26 | Purge Solenoid Valve |
| CODE 28 | EGR Solenoid Valve |
| CODE 34 | Idle Speed Control (ISC) |
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.