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.
Trouble Code Identification Table (SOHC)
1991 Mazda 929 BaseSECTION Trouble Code Identification Table (SOHC)
TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| CODE 1 | SOHC Ignition Pulse |
| CODE 2 | SOHC NE Signal-Distributor |
| CODE 3 | SOHC G1 Signal-Distributor |
| CODE 4 | SOHC G2 Signal-Distributor |
| CODE 8 | SOHC Airflow Meter |
| CODE 9 | SOHC Coolant Thermosensor |
| CODE 10 | SOHC Intake Air Thermosensor-Airflow Meter |
| CODE 11 | SOHC Intake Air Thermosensor-Dynamic Chamber |
| CODE 12 | SOHC Throttle Sensor |
| CODE 14 | SOHC Atmospheric Pressure |
| CODE 15 | SOHC Oxygen Sensor |
| CODE 16 | SOHC EGR Position Sensor |
| CODE 17 | SOHC Feedback System |
| CODE 25 | SOHC Pressure Regulator Control Solenoid Valve |
| CODE 26 | SOHC Purge Control Solenoid Valve |
| CODE 28 | SOHC EGR Vacuum Solenoid Valve |
| CODE 29 | SOHC EGR Vent Solenoid Valve |
| CODE 34 | SOHC Idle Speed Control (ISC) |
| CODE 40 | SOHC Triple Induction Control System & O2 Heater |
| CODE 41 | SOHC Variable Resonance Induction 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.