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 MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSIMMOBILIZER SYSTEMSSELF-DIAGNOSTIC SYSTEMCLEARING DTCS
1999 Mazda 626 ES, 2.5 D, Standard
Clearing DTCS
1999 Mazda 626 ES, 2.5 D, StandardSECTION Clearing DTCS
NOTE:
DTCs may also be cleared by disconnecting battery, but learned values for mass airflow sensor and throttle position sensor will be erased.
Once repairs are completed, connect NGS tester to DLC. Select CLEAR function and erase DLCs from memory. Road test vehicle. Check for DTCs. Repair any DTCs retrieved.
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.