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) (2 Of 5)
- DTC Index
- Engine (ECM)
- DTC P014D: A/F Sensor 1
- DTC P014E: A/F Sensor 1
- DTC P014F: A/F Sensor 1
- DTC P0150: A/F Sensor 1
- DTC P0151: A/F Sensor 1
- DTC P0152: A/F Sensor 1
- DTC P0156: Heated OXGEN Sensor 2
- DTC P0157: Ho2S2
- DTC P0158: Ho2S2
- DTC P0159: Ho2S2
- DTC P015A: A/F Sensor 1
- DTC P015B: A/F Sensor 1
- DTC P015C: A/F Sensor 1
- DTC P015D: A/F Sensor 1
- DTC P0171: Fuel Injection System Function
- DTC P0172: Fuel Injection System Function
- DTC P0174: Fuel Injection System Function
- DTC P0175: Fuel Injection System Function
- DTC P0181: FTT Sensor
- DTC P0182: FTT Sensor
- DTC P0183: FTT Sensor
- DTC P0190: FRP Sensor
- DTC P0191: FRP Sensor
- DTC P0192: FRP Sensor
- DTC P0193: FRP Sensor
- DTC P0196: Engine Oil Temperature Sensor
- DTC P0197: Engine Oil Temperature Sensor
- DTC P0198: Engine Oil Temperature Sensor
- DTC P01F0: Engine Coolant Temperature
- DTC P0201: Injector
- DTC P0202: Injector
- DTC P0203: Injector
- DTC P0204: Injector
- DTC P0205: Injector
- DTC P0206: Injector
- DTC P0207: Injector
- DTC P0208: Injector
- DTC P0222: TP Sensor
- DTC P0223: TP Sensor
- DTC P0300: Misfire
- DTC P0301: Misfire
- DTC P0302: Misfire
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.