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 MANUALSMAZDA2013MX-5 MIATA GRAND TOURING, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALHORNSINSTRUMENTATION/DRIVER INFOINSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODECHECK CODE INSPECTIONCHECK CODE 12
2013 Mazda MX-5 Miata Grand Touring, Automatic Trans
Check code 12
2013 Mazda MX-5 Miata Grand Touring, Automatic TransSECTION Check code 12
CODE INSPECTION CONDITION CHART
| Check code 12 | Speedometer display signal | ||
|---|---|---|---|
| INSPECTION CONDITION | DISPLAY | ACTION | |
| After selecting check code 12, wait for approx. 2 s. | oo | The speedometer needle moves full scale then returns to approx. 60 km/h or approx. 60 mph. | The speedometer is normal. |
| Except above. | Replace the instrument cluster. | ||
| Err | - | ||
RENDER: 1.0x
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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.