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
Engine Control System (DTCS) (1 Of 5)
- DTC Index
- Engine (ECM)
- DTC C053C: Wheel Speed Sensor
- DTC P0011: IVT Control
- DTC P0012: Intake Valve Timing Control
- DTC P0014: EVT Control
- DTC P0015: Exhaust Valve Timing Control
- DTC P0016: Intake Valve Timing Control
- DTC P0017: Exhaust Valve Timing Control
- DTC P0018: Intake Valve Timing Control
- DTC P0019: Exhaust Valve Timing Control
- DTC P0021: IVT Control
- DTC P0022: Intake Valve Timing Control
- DTC P0024: EVT Control
- DTC P0025: Exhaust Valve Timing Control
- DTC P0030: A/F Sensor 1 Heater
- DTC P0031: A/F Sensor 1 Heater
- DTC P0032: A/F Sensor 1 Heater
- DTC P0037: Ho2S2 Heater
- DTC P0038: Ho2S2 Heater
- DTC P0050: A/F Sensor 1 Heater
- DTC P0051: A/F Sensor 1 Heater
- DTC P0052: A/F Sensor 1 Heater
- DTC P0053: A/F Sensor 1 Heater
- DTC P0057: Ho2S2 Heater
- DTC P0058: Ho2S2 Heater
- DTC P0059: A/F Sensor 1 Heater
- DTC P0075: IVT Control Solenoid Valve
- DTC P0078: EVT Control Solenoid Valve
- DTC P0081: IVT Control Solenoid Valve
- DTC P0084: EVT Control Solenoid Valve
- DTC P0087: FRP Control System
- DTC P0088: FRP Control System
- DTC P0090: Fuel Rail Pressure Control System
- DTC P00B3: Engine Coolant Temperature Sensor 2
- DTC P00B4: Engine Coolant Temperature Sensor 2
- DTC P00D2: Ho2S2 Heater
- DTC P00D4: Ho2S2 Heater
- DTC P00FE: EVAP Control System
- DTC P0101: MAF Sensor
- DTC P0102: MAF Sensor
- DTC P0103: MAF Sensor
- DTC P0107: Atmospheric Pressure Sensor
- DTC P0108: Atmospheric Pressure Sensor
- DTC P0111: IAT Sensor
- DTC P0112: IAT Sensor
- DTC P0113: IAT Sensor
- DTC P0116: ECT Sensor
- DTC P0117: ECT Sensor
- DTC P0118: ECT Sensor
- DTC P0122: TP Sensor
- DTC P0123: TP Sensor
- DTC P0125: ECT Sensor
- DTC P0127: IAT Sensor
- DTC P0130: A/F Sensor 1
- DTC P0131: A/F Sensor 1
- DTC P0132: A/F Sensor 1
- DTC P0136: Ho2S2
- DTC P0137: Ho2S2
- DTC P0138: Ho2S2
- DTC P0139: Ho2S2
- DTC P014C: A/F Sensor 1
Factory Service Tools
Use the Manual With the Right Hardware
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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.