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.

2017 Mazda 5 GS, Automatic TransFACTORY OEM SERVICE PROCEDURE

No. 2 Check Engine Light Illuminates: Notes

NO. 2 CHECK ENGINE LIGHT ILLUMINATES DESCRIPTION AND POSSIBLE CAUSE

2	CHECK ENGINE LIGHT ILLUMINATES
DESCRIPTION	Check engine light is illuminated incorrectly.
POSSIBLE CAUSE	Check engine light illuminates for emission-related concern (PCM DTC is stored.) Instrument cluster malfunction NOTE: If the check engine light blinks at steady rate, misfire condition could possibly exist.

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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