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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 143 (HVAC SYSTEM)ON-BOARD DIAGNOSTICDIAGNOSTIC TROUBLE CODE NUMBER INSPECTIONERASING PAST FAILURE MEMORY
2010 Mazda 5 Sport, 2.3 L, Standard
Erasing Past Failure Memory
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Erasing Past Failure Memory
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- When DTCs are displayed in the past failure indication mode, they remain in the memory after the failed systems are corrected. Consequently, the next time the past failure indication mode is used, the same past failure DTCs will be indicated by the flashing of the rear defroster indicator light on the climate control unit. Therefore, erase the past failure memory after correcting all failed systems. To erase the past failure memory, press the AUTO switch and REC/FRESH switch on the climate control unit at the same time while in past failure indication mode. If erased, the rear defroster indicator light flashes once.
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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.