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.
1994 Mazda RX-7 AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes
- Introduction
- Self-Diagnostic System
- Trouble Code Identification
- Code Charts
- 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 - CALIF)
- Code 17: (Feedback System)
- Code 18: (Throttle Sensor - Narrow Range)
- Code 20: (Metering Oil Pump Position Sensor)
- Code 23: (Fuel THERMOSENSOR)
- Code 25: (Sol Valve - Pressure Regulator Control)
- 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: (Sol Valve - ACCEL Warm-Up System - AWS)
- 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: (Sol Valve - Double Throttle Control)
- 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)
- Summary
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.