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 MANUALSMAZDA1991RX-7 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODESTROUBLE CODE IDENTIFICATION CHARTTROUBLE CODE IDENTIFICATION TABLE
1991 Mazda RX-7 Base, 2D Convertible, Standard
Trouble Code Identification Table
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Trouble Code Identification Table
TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| CODE 1 | Ignition Coil Signal |
| CODE 2 | NE Signal-Crank Angle SensoR |
| CODE 3 | G-Signal-Crank Angle Sensor |
| CODE 5 | Knock Sensor (Turbo) |
| CODE 8 | Airflow Meter |
| CODE 9 | Water Thermosensor |
| CODE 10 | Intake Air Temp Sensor-Airflow Meter |
| CODE 11 | Intake Air Temp Sensor-Engine |
| CODE 12 | Throttle Sensor |
| CODE 13 | Pressure Sensor |
| CODE 14 | Atmospheric Pressure Sensor |
| CODE 15 | Oxygen Sensor |
| CODE 17 | Feedback System |
| CODE 18 | Throttle Sensor |
| CODE 20 | Metering Oil Pump Position Sensor |
| CODE 25 | Pressure Regulator Control Solenoid |
| CODE 26 | Metering Oil Pump Stepping Motor |
| CODE 27 | Metering Oil Pump |
| CODE 30 | Split Air Solenoid Valve |
| CODE 31 | Relief Solenoid Valve |
| CODE 32 | Switch Solenoid Valve |
| CODE 33 | Port Air Solenoid Valve |
| CODE 34 | By-Pass Air Control Solenoid Valve |
| CODE 37 | Metering Oil Pump |
| CODE 40 | Auxiliary Port Valve |
| CODE 41 | Variable Dynamic Effect Intake |
| CODE 42 | Duty Solenoid-Turbo Boost |
| CODE 51 | Fuel Pump Resistor |
| CODE 71 | Front Secondary Injector |
| CODE 73 | Rear Secondary Injector |
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.