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.
1993 Mazda RX-7 AutomaticFACTORY OEM SERVICE PROCEDURE
Trouble Code Identification Table
TROUBLE CODE IDENTIFICATION
| DTC | Description |
|---|---|
| CODE 2 | Crank Angle Sensor - NE Sensor |
| CODE 3 | Crank Angle Sensor - G Sensor |
| CODE 5 | Knock Sensor |
| CODE 6 | Speedometer Sensor |
| CODE 9 | Water Thermosensor |
| CODE 11 | Intake Air Thermosensor |
| CODE 12 | Throttle Sensor - Full Range |
| CODE 13 | Pressure Sensor |
| CODE 14 | Atmospheric Pressure Sensor |
| CODE 15 | Oxygen Sensor |
| CODE 16 | EGR Switch - CA |
| CODE 17 | Feedback System |
| CODE 18 | Throttle Sensor - Narrow Range |
| CODE 20 | Metering Oil Pump Position Sensor |
| CODE 23 | Fuel Thermosensor |
| CODE 25 | Solenoid Valve - Pressure Regulator |
| CODE 26 | Metering Oil Pump Stepper Motor |
| CODE 27 | Metering Oil Pump |
| CODE 28 | Solenoid Valve - EGR |
| CODE 30 | Solenoid Valve - Split Air By-Pass |
| CODE 31 | Solenoid Valve - Relief 1 |
| CODE 32 | Solenoid Valve - Switching |
| CODE 33 | Solenoid Valve - Port Air By-Pass |
| CODE 34 | Solenoid Valve - Idle Speed Control |
| CODE 37 | Metering Oil Pump |
| CODE 38 | Solenoid Valve - Accelerated Warm-Up |
| CODE 39 | Solenoid Valve - Relief 2 |
| CODE 40 | Solenoid Valve - Purge Control |
| CODE 42 | Solenoid Valve - Turbo Pre-Control |
| CODE 43 | Solenoid Valve - Wastegate Control |
| CODE 44 | Solenoid Valve - Turbo Control |
| CODE 45 | Solenoid Valve - Charge Control |
| CODE 46 | Solenoid Valve - Charge Relief Control |
| CODE 50 | Solenoid Valve - Double Throttle |
| CODE 51 | Fuel Pump Relay |
| CODE 54 | Air Pump Relay |
| CODE 71 | Injector - Front Secondary |
| CODE 73 | Injector - Rear Secondary |
| CODE 76 | Slip Lock-Up Off Signal |
| CODE 77 | Torque Reduced Signal |
Factory Service Tools
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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.
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