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.
2020 Infiniti QX80 LimitedFACTORY OEM SERVICE PROCEDURE
DTC Diagnosis Procedure
- INSPECTION START
- Perform DTC Confirmation Procedure. Refer to DTC Description .
- Erase DTC.
Is DTC erased?
YES
INSPECTION END
NO
GO TO 2.
- REPLACE ECM
- Replace ECM. Refer to ECM : Removal & Installation .
- Perform Refer to Work Procedure .
INSPECTION END
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.