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 MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 487 (INSTRUMENTATION/DRIVER INFO)INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODECHECK CODE INSPECTIONCHECK CODE 18
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Check code 18
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Check code 18
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
CHECK CODE 18 DIAGNOSTIC PROCEDURES
| Check code 18 | Ignition key illumination on/off signal | ||
|---|---|---|---|
| INSPECTION CONDITION | DISPLAY | ACTION | |
| After selecting check code 18, wait for approx. 2 8. | on (FLASHING) | Ignition key illumination flashes three times. | The ignition key illumination is normal. |
| Except above | Verify that the voltage of the instrument cluster terminal 1 K is B+.
|
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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.